diff --git a/hash-map.dd b/hash-map.dd
index 22102abc9b..dfeb32f3b8 100644
--- a/hash-map.dd
+++ b/hash-map.dd
@@ -41,7 +41,7 @@ $(SPEC_S Associative Arrays,
         ---------
         int* p;
         p = ("hello" $(CODE_HIGHLIGHT in) b);
-        if (p !is (B null))
+        if (p !is $(B null))
                 ...
         ---------