diff --git a/lib/compress.js b/lib/compress.js
index bfb476cf..14fb8f1e 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1108,7 +1108,7 @@ merge(Compressor.prototype, {
             this._evaluating = true;
             try {
                 var d = this.definition();
-                if (d && (d.constant || compressor.option("reduce_vars") && !d.global && !d.modified) && d.init) {
+                if (d && (d.constant || compressor.option("reduce_vars") && !d.modified) && d.init) {
                     return ev(d.init, compressor);
                 }
             } finally {