diff --git a/src/impls.rs b/src/impls.rs
index fade074..f09bb9e 100644
--- a/src/impls.rs
+++ b/src/impls.rs
@@ -52,8 +52,8 @@ macro_rules! impl_partial_eq_cow {
         impl<'a> PartialEq<$lhs> for $rhs {
             #[inline]
             fn eq(&self, other: &$lhs) -> bool {
-                let this: &[u8] = (&**other).as_ref();
-                PartialEq::eq(this, self.as_bytes())
+                let this: &[u8] = (&**self).as_ref();
+                PartialEq::eq(this, other.as_bytes())
             }
         }
     };