diff --git a/std/encoding.d b/std/encoding.d
index 9334f3183..c7c161e7d 100644
--- a/std/encoding.d
+++ b/std/encoding.d
@@ -1879,7 +1879,7 @@ immutable(E)[] sanitize(E)(immutable(E)[] s)
         offset += n;
         t = t[n..$];
     }
-    return cast(immutable(E)[])array[0 .. offset];
+    return array[0 .. offset];
 }
 
 ///