diff --git a/src/libcore/fmt/mod.rs b/src/libcore/fmt/mod.rs
index 7627a2048d19..32f1142069e2 100644
--- a/src/libcore/fmt/mod.rs
+++ b/src/libcore/fmt/mod.rs
@@ -1275,7 +1275,7 @@ pub fn write_fmt(&mut self, fmt: Arguments) -> Result {
         write(self.buf, fmt)
     }
 
-    /// Flags for formatting (packed version of rt::Flag)
+    /// Flags for formatting
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn flags(&self) -> u32 { self.flags }