diff --git a/components/style/properties/longhand/inherited_text.mako.rs b/components/style/properties/longhand/inherited_text.mako.rs
index 779bb9532f5..27edd52c0f0 100644
--- a/components/style/properties/longhand/inherited_text.mako.rs
+++ b/components/style/properties/longhand/inherited_text.mako.rs
@@ -184,7 +184,8 @@ ${helpers.predefined_type("text-indent",
                           "LengthOrPercentage",
                           "computed::LengthOrPercentage::Length(Au(0))",
                           animation_value_type="ComputedValue",
-                          spec="https://drafts.csswg.org/css-text/#propdef-text-indent")}
+                          spec="https://drafts.csswg.org/css-text/#propdef-text-indent",
+                          allow_quirks=True)}
 
 // Also known as "word-wrap" (which is more popular because of IE), but this is the preferred
 // name per CSS-TEXT 6.2.
diff --git a/tests/wpt/metadata/quirks-mode/unitless-length.html.ini b/tests/wpt/metadata/quirks-mode/unitless-length.html.ini
index e3cbb4dc262..60709b5ab99 100644
--- a/tests/wpt/metadata/quirks-mode/unitless-length.html.ini
+++ b/tests/wpt/metadata/quirks-mode/unitless-length.html.ini
@@ -12,9 +12,6 @@
     expected:
       if os == "mac": FAIL
 
-  [text-indent: 1 (quirks)]
-    expected: FAIL
-
   [top: 1 (quirks)]
     expected:
       if os == "mac": FAIL
@@ -45,9 +42,6 @@
     expected:
       if os == "mac": FAIL
 
-  [text-indent: +1 (quirks)]
-    expected: FAIL
-
   [top: +1 (quirks)]
     expected:
       if os == "mac": FAIL
@@ -78,9 +72,6 @@
     expected:
       if os == "mac": FAIL
 
-  [text-indent: -1 (quirks)]
-    expected: FAIL
-
   [top: -1 (quirks)]
     expected:
       if os == "mac": FAIL
@@ -111,9 +102,6 @@
     expected:
       if os == "mac": FAIL
 
-  [text-indent: 1.5 (quirks)]
-    expected: FAIL
-
   [top: 1.5 (quirks)]
     expected:
       if os == "mac": FAIL
@@ -144,9 +132,6 @@
     expected:
       if os == "mac": FAIL
 
-  [text-indent: +1.5 (quirks)]
-    expected: FAIL
-
   [top: +1.5 (quirks)]
     expected:
       if os == "mac": FAIL
@@ -177,9 +162,6 @@
     expected:
       if os == "mac": FAIL
 
-  [text-indent: -1.5 (quirks)]
-    expected: FAIL
-
   [top: -1.5 (quirks)]
     expected:
       if os == "mac": FAIL