diff --git a/src/libcore/u64.rs b/src/libcore/u64.rs
index 9483af9b634b..a7cd9af35bc8 100644
--- a/src/libcore/u64.rs
+++ b/src/libcore/u64.rs
@@ -65,7 +65,7 @@ Convert to a string
 fn str(n: u64) -> str { ret to_str(n, 10u); }
 
 /*
-Function: parse_buf
+Function: from_str
 
 Parse a string as an unsigned integer.
 */