1 files changed, 1 insertions, 1 deletions
diff --git a/lib/compress.js b/lib/compress.js
index 6e0d36a7..904295ee 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -4927,7 +4927,7 @@ merge(Compressor.prototype, {
             if (def.single_use) return;
             if (top_retain(def)) return;
             if (sym.fixed_value() !== right) return;
-            return right instanceof AST_Object;
+            return right instanceof AST_Object && right.properties.length > 0;
         }
     });