4 files changed, 5 insertions, 5 deletions
diff --git a/components/gfx/font.rs b/components/gfx/font.rs
index 8be825f3108..a81c51b4bda 100644
--- a/components/gfx/font.rs
+++ b/components/gfx/font.rs
@@ -185,7 +185,7 @@ impl Font {
         let result = self.handle.get_table_for_tag(tag);
         let status = if result.is_some() { "Found" } else { "Didn't find" };
 
-        debug!("{:s} font table[{:s}] with family={}, face={}",
+        debug!("{} font table[{}] with family={}, face={}",
                status, tag.tag_to_str(),
                self.handle.family_name(), self.handle.face_name());
 
diff --git a/components/gfx/font_cache_task.rs b/components/gfx/font_cache_task.rs
index a7bc98424ca..0b1ba4c9083 100644
--- a/components/gfx/font_cache_task.rs
+++ b/components/gfx/font_cache_task.rs
@@ -181,7 +181,7 @@ impl FontCache {
         // TODO(Issue #188): look up localized font family names if canonical name not found
         // look up canonical name
         if self.local_families.contains_key(family_name) {
-            debug!("FontList: Found font family with name={:s}", family_name.as_slice());
+            debug!("FontList: Found font family with name={}", family_name.as_slice());
             let s = &mut self.local_families[*family_name];
 
             if s.templates.len() == 0 {
@@ -199,7 +199,7 @@ impl FontCache {
 
             None
         } else {
-            debug!("FontList: Couldn't find font family with name={:s}", family_name.as_slice());
+            debug!("FontList: Couldn't find font family with name={}", family_name.as_slice());
             None
         }
     }
diff --git a/components/gfx/platform/macos/font_list.rs b/components/gfx/platform/macos/font_list.rs
index da0485713f8..4a10b0ee463 100644
--- a/components/gfx/platform/macos/font_list.rs
+++ b/components/gfx/platform/macos/font_list.rs
@@ -19,7 +19,7 @@ pub fn get_available_families(callback: |String|) {
 }
 
 pub fn get_variations_for_family(family_name: &str, callback: |String|) {
-    debug!("Looking for faces of family: {:s}", family_name);
+    debug!("Looking for faces of family: {}", family_name);
 
     let family_collection =
         core_text::font_collection::create_for_family(family_name.as_slice());
diff --git a/components/gfx/text/shaping/harfbuzz.rs b/components/gfx/text/shaping/harfbuzz.rs
index d510126e7fd..4cf0575dbee 100644
--- a/components/gfx/text/shaping/harfbuzz.rs
+++ b/components/gfx/text/shaping/harfbuzz.rs
@@ -304,7 +304,7 @@ impl Shaper {
             debug!("{} -> {}", i, loc);
         }
 
-        debug!("text: {:s}", text);
+        debug!("text: {}", text);
         debug!("(char idx): char->(glyph index):");
         for (i, ch) in text.char_indices() {
             debug!("{}: {} --> {:d}", i, ch, *byte_to_glyph.get(i).unwrap() as int);