diff --git a/src/servo/parser/css_lexer.rs b/src/servo/parser/css_lexer.rs
index 22b1ea1aaed..169947f3736 100644
--- a/src/servo/parser/css_lexer.rs
+++ b/src/servo/parser/css_lexer.rs
@@ -263,11 +263,11 @@ fn spawn_css_lexer_from_file(-filename: ~str) -> port<Token> {
         // Check if the given css file existed, if it does, parse it,
         // otherwise just send an eof.
         if file_try.is_ok() {
-            #debug["Lexing css sheet %s", copy filename];
+            #debug["Lexing css sheet %?", copy filename];
             let file_data = file_try.get();
             lex_css_from_bytes(file_data, result_chan);
         } else {
-            #debug["Failed to open css sheet %s", copy filename];
+            #debug["Failed to open css sheet %?", copy filename];
             result_chan.send(Eof);
         }
     });
diff --git a/src/servo/text/native_font/ft_native_font.rs b/src/servo/text/native_font/ft_native_font.rs
index 259b5c992ac..a39f84e4313 100644
--- a/src/servo/text/native_font/ft_native_font.rs
+++ b/src/servo/text/native_font/ft_native_font.rs
@@ -68,7 +68,7 @@ class FreeTypeNativeFont/& {
 fn create(lib: FT_Library, buf: &~[u8]) -> result<FreeTypeNativeFont, ()> {
     assert lib.is_not_null();
     let face: FT_Face = null();
-    ret vec_as_buf(*buf, |cbuf| {
+    ret vec_as_buf(*buf, |cbuf, len| {
         if FT_New_Memory_Face(lib, cbuf, (*buf).len() as FT_Long,
                               0 as FT_Long, addr_of(face)).succeeded() {
             // FIXME: These values are placeholders