1 files changed, 1 insertions, 1 deletions
diff --git a/lib/compress.js b/lib/compress.js
index 0d98e456..66441e80 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -5275,7 +5275,7 @@ merge(Compressor.prototype, {
                 || any(this.body, compressor);
         });
         def(AST_SymbolRef, function(compressor) {
-            return !this.is_declared(compressor);
+            return !this.is_declared(compressor) || !can_drop_symbol(this, compressor);
         });
         def(AST_Template, function(compressor) {
             if (any(this.expressions, compressor)) return true;