diff --git a/tests/ref/background_image_position_a.html b/tests/ref/background_image_position_a.html
index 292c7eedd9c..c11261703d4 100644
--- a/tests/ref/background_image_position_a.html
+++ b/tests/ref/background_image_position_a.html
@@ -2,10 +2,6 @@
 <html>
     <head>
         <style type="text/css">
-            @font-face {
-                font-family: 'ahem';
-                src: url(fonts/ahem/ahem.ttf);
-            }
             body {
                 font-family: 'ahem';
                 margin: 0;
diff --git a/tests/ref/css/ahem.css b/tests/ref/css/ahem.css
index ef0395b0503..51eede74aaa 100644
--- a/tests/ref/css/ahem.css
+++ b/tests/ref/css/ahem.css
@@ -1,8 +1,3 @@
-@font-face {
-    font-family: 'ahem';
-    src: url(../fonts/ahem/ahem.ttf);
-}
-
 body {
     font-family: 'ahem';
     font-size: 100px;
diff --git a/tests/ref/fixed_width_overrides_child_intrinsic_width_a.html b/tests/ref/fixed_width_overrides_child_intrinsic_width_a.html
index 9d7a94cbbf8..33e9e7c629b 100644
--- a/tests/ref/fixed_width_overrides_child_intrinsic_width_a.html
+++ b/tests/ref/fixed_width_overrides_child_intrinsic_width_a.html
@@ -2,10 +2,6 @@
 <html>
     <head>
         <style type="text/css">
-            @font-face {
-                font-family: 'ahem';
-                src: url('fonts/ahem/ahem.ttf');
-            }
             body {
                 font-family: 'ahem';
                 font-size: 100px;
diff --git a/tests/ref/float_intrinsic_width_a.html b/tests/ref/float_intrinsic_width_a.html
index cd1f4da319e..766eb70c0b3 100644
--- a/tests/ref/float_intrinsic_width_a.html
+++ b/tests/ref/float_intrinsic_width_a.html
@@ -2,10 +2,6 @@
 <html>
     <head>
         <style type="text/css">
-            @font-face {
-                font-family: 'ahem';
-                src: url('fonts/ahem/ahem.ttf');
-            }
             body {
                 font-family: 'ahem';
                 font-size: 100px;
diff --git a/tests/ref/float_right_intrinsic_width_a.html b/tests/ref/float_right_intrinsic_width_a.html
index 5e503e34227..6e32cde2ce6 100644
--- a/tests/ref/float_right_intrinsic_width_a.html
+++ b/tests/ref/float_right_intrinsic_width_a.html
@@ -2,10 +2,6 @@
 <html>
     <head>
         <style type="text/css">
-            @font-face {
-                font-family: 'ahem';
-                src: url(fonts/ahem/ahem.ttf);
-            }
             .fr {
                 float: right;
             }
diff --git a/tests/ref/float_table_a.html b/tests/ref/float_table_a.html
index b88e5101826..2d5baabed6e 100644
--- a/tests/ref/float_table_a.html
+++ b/tests/ref/float_table_a.html
@@ -4,10 +4,6 @@
         <meta http-equiv="content-type" content="text/html; charset=UTF-8">
         <meta charset="UTF-8">
         <style type="text/css">
-            @font-face {
-                font-family: 'ahem';
-                src: url(fonts/ahem/ahem.ttf);
-            }
             body {
                 margin: 0;
             }
diff --git a/tests/ref/fonts/ahem/COPYING b/tests/ref/fonts/ahem/COPYING
deleted file mode 100644
index 6327b904bed..00000000000
--- a/tests/ref/fonts/ahem/COPYING
+++ /dev/null
@@ -1,36 +0,0 @@
-The Ahem font in this directory belongs to the public domain. In
-jurisdictions that do not recognize public domain ownership of these
-files, the following Creative Commons Zero declaration applies:
-
-<http://labs.creativecommons.org/licenses/zero-waive/1.0/us/legalcode>
-
-which is quoted below:
-
-  The person who has associated a work with this document (the "Work")
-  affirms that he or she (the "Affirmer") is the/an author or owner of
-  the Work. The Work may be any work of authorship, including a
-  database.
-
-  The Affirmer hereby fully, permanently and irrevocably waives and
-  relinquishes all of her or his copyright and related or neighboring
-  legal rights in the Work available under any federal or state law,
-  treaty or contract, including but not limited to moral rights,
-  publicity and privacy rights, rights protecting against unfair
-  competition and any rights protecting the extraction, dissemination
-  and reuse of data, whether such rights are present or future, vested
-  or contingent (the "Waiver"). The Affirmer makes the Waiver for the
-  benefit of the public at large and to the detriment of the Affirmer's
-  heirs or successors.
-
-  The Affirmer understands and intends that the Waiver has the effect
-  of eliminating and entirely removing from the Affirmer's control all
-  the copyright and related or neighboring legal rights previously held
-  by the Affirmer in the Work, to that extent making the Work freely
-  available to the public for any and all uses and purposes without
-  restriction of any kind, including commercial use and uses in media
-  and formats or by methods that have not yet been invented or
-  conceived. Should the Waiver for any reason be judged legally
-  ineffective in any jurisdiction, the Affirmer hereby grants a free,
-  full, permanent, irrevocable, nonexclusive and worldwide license for
-  all her or his copyright and related or neighboring legal rights in
-  the Work.
diff --git a/tests/ref/fonts/ahem/README b/tests/ref/fonts/ahem/README
deleted file mode 100644
index 7a4fcea05a1..00000000000
--- a/tests/ref/fonts/ahem/README
+++ /dev/null
@@ -1,30 +0,0 @@
-The Ahem font was developed by Todd Fahrner to help test writers
-develop predictable tests. The font's em square is exactly square.
-Its ascent and descent is exactly the size of the em square. This
-means that the font's extent is exactly the same as its line-height,
-meaning that it can be exactly aligned with padding, borders, margins,
-and so forth.
-
-The font's alphabetic baseline is 0.2em above its bottom, and 0.8em
-below its top. The font has an x-height of 0.8em.
-
-The font has four glyphs:
-
-  'X' U+0058 A square exactly 1em in height and width.
-
-  'p' U+0070 A rectangle exactly 0.2em high, 1em wide, and aligned so
-             that its top is flush with the baseline.
-
-  'É' U+00C9 A rectangle exactly 0.8em high, 1em wide, and aligned so
-             that its bottom is flush with the baseline.
-
-  ' ' U+0020 A transparent space exactly 1em high and wide.
-
-Most other US-ASCII characters in the font have the same glyph as X.
-
-The Ahem font belongs to the public domain as described in COPYING.
-
-Acknowledgements: The font was originally created by Todd Fahrner in
-the late 90s, and was updated by Paul Nelson in the mid 2000s. The
-changes were the introduction of x-height information to the OS/2
-table and the addition of the space and non-breaking space glyphs.
diff --git a/tests/ref/fonts/ahem/ahem.ttf b/tests/ref/fonts/ahem/ahem.ttf
deleted file mode 100644
index ac81cb03165..00000000000
Binary files a/tests/ref/fonts/ahem/ahem.ttf and /dev/null differ
diff --git a/tests/ref/img_block_display_a.html b/tests/ref/img_block_display_a.html
index be879b37b4c..95808589bc5 100644
--- a/tests/ref/img_block_display_a.html
+++ b/tests/ref/img_block_display_a.html
@@ -2,10 +2,6 @@
 <html>
     <head>
         <style type="text/css">
-            @font-face {
-                font-family: 'ahem';
-                src: url(fonts/ahem/ahem.ttf);
-            }
             body {
                 margin: 0;
                 font-family: 'ahem';
diff --git a/tests/ref/inline_block_baseline_a.html b/tests/ref/inline_block_baseline_a.html
index 21e75c88583..1345d3331b2 100644
--- a/tests/ref/inline_block_baseline_a.html
+++ b/tests/ref/inline_block_baseline_a.html
@@ -2,10 +2,6 @@
 <html>
     <head>
         <style type="text/css">
-            @font-face {
-                font-family: 'ahem';
-                src: url(fonts/ahem/ahem.ttf);
-            }
             body {
                 font-family: 'ahem';
                 font-size: 400px;
diff --git a/tests/ref/inline_block_img_a.html b/tests/ref/inline_block_img_a.html
index 06858c339e1..0fdf791a04c 100644
--- a/tests/ref/inline_block_img_a.html
+++ b/tests/ref/inline_block_img_a.html
@@ -2,10 +2,6 @@
 <html>
     <head>
         <style>
-            @font-face {
-                font-family: 'ahem';
-                src: url(fonts/ahem/ahem.ttf);
-            }
             body {
                 margin: 0;
                 padding: 0;
diff --git a/tests/ref/inline_block_margin_a.html b/tests/ref/inline_block_margin_a.html
index 2c1a0b90d16..5acd2bf87c2 100644
--- a/tests/ref/inline_block_margin_a.html
+++ b/tests/ref/inline_block_margin_a.html
@@ -2,10 +2,6 @@
 <html>
     <head>
         <style type="text/css">
-            @font-face {
-                font-family: 'ahem';
-                src: url(fonts/ahem/ahem.ttf);
-            }
             body {
                 font-family: 'ahem';
                 font-size: 100px;
diff --git a/tests/ref/inline_block_with_margin_a.html b/tests/ref/inline_block_with_margin_a.html
index cf2186a39af..d12b3d36b42 100644
--- a/tests/ref/inline_block_with_margin_a.html
+++ b/tests/ref/inline_block_with_margin_a.html
@@ -2,10 +2,6 @@
 <html>
     <head>
         <style type="text/css">
-            @font-face {
-                font-family: 'ahem';
-                src: url(fonts/ahem/ahem.ttf);
-            }
             body {
                 margin: 0;
                 font-family: 'ahem';
diff --git a/tests/ref/inline_element_border_a.html b/tests/ref/inline_element_border_a.html
index 39a49610116..c97a86d89da 100644
--- a/tests/ref/inline_element_border_a.html
+++ b/tests/ref/inline_element_border_a.html
@@ -2,10 +2,6 @@
 <html>
     <head>
         <style type="text/css">
-        @font-face {
-            font-family: 'ahem';
-            src: url(fonts/ahem/ahem.ttf);
-        }
         .large-border {
             border-left: 100px solid red;
             border-right: 100px solid blue;
diff --git a/tests/ref/line_height_a.html b/tests/ref/line_height_a.html
index 3cb62240be3..b36476d3940 100644
--- a/tests/ref/line_height_a.html
+++ b/tests/ref/line_height_a.html
@@ -2,10 +2,6 @@
 <html>
     <head>
         <style>
-            @font-face {
-                font-family: 'ahem';
-                src: url(fonts/ahem/ahem.ttf);
-            }
             body {
                 margin: 0;
                 padding: 0;
diff --git a/tests/ref/line_height_ref.html b/tests/ref/line_height_ref.html
index 950e645a655..deaabe11d2b 100644
--- a/tests/ref/line_height_ref.html
+++ b/tests/ref/line_height_ref.html
@@ -2,10 +2,6 @@
 <html>
     <head>
         <style>
-            @font-face {
-                font-family: 'ahem';
-                src: url(fonts/ahem/ahem.ttf);
-            }
             body {
                 margin: 0;
                 padding: 0;
diff --git a/tests/ref/per_glyph_font_fallback_a.html b/tests/ref/per_glyph_font_fallback_a.html
index 9f4d6c12cd9..a6af8a9d262 100644
--- a/tests/ref/per_glyph_font_fallback_a.html
+++ b/tests/ref/per_glyph_font_fallback_a.html
@@ -3,11 +3,6 @@
 <head>
 <!-- Tests that font fallback occurs on a per-glyph basis. -->
 <style>
-@font-face {
-    font-family: 'ahem';
-    src: url(fonts/ahem/ahem.ttf);
-}
-
 body {
     font-family: Ahem, sans-serif;
     font-size: 24px;
diff --git a/tests/ref/per_glyph_font_fallback_ref.html b/tests/ref/per_glyph_font_fallback_ref.html
index bb603464846..7e0c56a3a3a 100644
--- a/tests/ref/per_glyph_font_fallback_ref.html
+++ b/tests/ref/per_glyph_font_fallback_ref.html
@@ -3,11 +3,6 @@
 <head>
 <!-- Tests that font fallback occurs on a per-glyph basis. -->
 <style>
-@font-face {
-    font-family: 'ahem';
-    src: url(fonts/ahem/ahem.ttf);
-}
-
 body {
     font-family: Ahem, sans-serif;
     font-size: 24px;
diff --git a/tests/ref/table_padding_a.html b/tests/ref/table_padding_a.html
index b2ce4eea82b..7fc0f3ec609 100644
--- a/tests/ref/table_padding_a.html
+++ b/tests/ref/table_padding_a.html
@@ -2,10 +2,6 @@
 <html>
     <head>
         <style type="text/css">
-            @font-face {
-                font-family: 'ahem';
-                src: url(fonts/ahem/ahem.ttf);
-            }
             body {
                 margin: 0;
                 font-family: 'ahem';
diff --git a/tests/reftest.rs b/tests/reftest.rs
index ae22841a921..47b3289a3d9 100644
--- a/tests/reftest.rs
+++ b/tests/reftest.rs
@@ -19,6 +19,7 @@
 extern crate png;
 extern crate test;
 extern crate url;
+extern crate util;
 
 use std::env;
 use std::ffi::OsStr;
@@ -257,6 +258,7 @@ fn capture(reftest: &Reftest, side: usize) -> (u32, u32, Vec<u8>) {
         .stdout(Stdio::null())
         .stderr(Stdio::null())
         .args(&reftest.servo_args[..])
+        .arg("--user-stylesheet").arg(util::resource_files::resources_dir_path().join("ahem.css"))
         // Allows pixel perfect rendering of Ahem font and the HTML canvas for reftests.
         .arg("-Z")
         .arg("disable-text-aa,disable-canvas-aa")
