1 files changed, 1 insertions, 2 deletions
diff --git a/test/compress/drop-unused.js b/test/compress/drop-unused.js
index 96273a8d..3e2b54f2 100644
--- a/test/compress/drop-unused.js
+++ b/test/compress/drop-unused.js
@@ -2181,8 +2181,7 @@ issue_3515_1: {
     expect: {
         var c = 0;
         (function() {
-            this[c++] = 0;
-            for (var key20 in !0);
+            for (var key20 in !(this[c++] = 0));
         })();
         console.log(c);
     }