diff --git a/src/librlibc/lib.rs b/src/librlibc/lib.rs
index cb27596c98c6b1a92159b30e24cda00239f353ce..3e45964cd12dc2e0534df9ac6653c9ff8866a734 100644
--- a/src/librlibc/lib.rs
+++ b/src/librlibc/lib.rs
@@ -95,7 +95,7 @@
         let a = *offset(s1, i as int);
         let b = *offset(s2, i as int);
         if a != b {
-            return (a - b) as i32
+            return a as i32 - b as i32
         }
         i += 1;
     }