diff --git a/test/ufuzz.js b/test/ufuzz.js
index e38ffa2f..d6a2a45b 100644
--- a/test/ufuzz.js
+++ b/test/ufuzz.js
@@ -162,6 +162,7 @@ var VALUES = [
     '"object"',
     '"number"',
     '"function"',
+    'this',
 ];
 
 var BINARY_OPS_NO_COMMA = [