diff --git a/src/libstd/num/int_macros.rs b/src/libstd/num/int_macros.rs
index 0e7e4277dd6c..8e48fcf58721 100644
--- a/src/libstd/num/int_macros.rs
+++ b/src/libstd/num/int_macros.rs
@@ -308,7 +308,7 @@ impl Integer for $T {
 
     /// Returns `true` if the number is divisible by `2`
     #[inline]
-    fn is_even(&self) -> bool { self.is_multiple_of(&2) }
+    fn is_even(&self) -> bool { self & 1 == 0 }
 
     /// Returns `true` if the number is not divisible by `2`
     #[inline]
diff --git a/src/libstd/num/uint_macros.rs b/src/libstd/num/uint_macros.rs
index 1a256981d74e..852fc5016b01 100644
--- a/src/libstd/num/uint_macros.rs
+++ b/src/libstd/num/uint_macros.rs
@@ -169,7 +169,7 @@ impl Integer for $T {
 
     /// Returns `true` if the number is divisible by `2`
     #[inline]
-    fn is_even(&self) -> bool { self.is_multiple_of(&2) }
+    fn is_even(&self) -> bool { self & 1 == 0 }
 
     /// Returns `true` if the number is not divisible by `2`
     #[inline]