diff --git a/components/gfx/text/shaping/harfbuzz.rs b/components/gfx/text/shaping/harfbuzz.rs
index 5a8a52cc130..4f473b96174 100644
--- a/components/gfx/text/shaping/harfbuzz.rs
+++ b/components/gfx/text/shaping/harfbuzz.rs
@@ -278,8 +278,6 @@ impl Shaper {
         // so, we must be careful to increment this when saving glyph entries.
         let mut char_idx = CharIndex(0);
 
-        assert!(glyph_count <= char_max);
-
         debug!("Shaped text[char count={}], got back {} glyph info records.",
                char_max,
                glyph_count);
diff --git a/components/layout/inline.rs b/components/layout/inline.rs
index c4c5fcfc610..c04190a36eb 100644
--- a/components/layout/inline.rs
+++ b/components/layout/inline.rs
@@ -24,7 +24,6 @@ use gfx::text::glyph::CharIndex;
 use gfx::text::text_run::TextRun;
 use std::cmp::max;
 use std::fmt;
-use std::iter;
 use std::mem;
 use std::num::ToPrimitive;
 use std::ops::{Add, Sub, Mul, Div, Rem, Neg, Shl, Shr, Not, BitOr, BitAnd, BitXor};