diff --git a/lib/compress.js b/lib/compress.js
index 2a026ba3..4065c543 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -688,6 +688,7 @@ merge(Compressor.prototype, {
             } else if (parent instanceof AST_Array
                 || parent instanceof AST_Await
                 || parent instanceof AST_Conditional && node !== parent.condition
+                || parent instanceof AST_Expansion
                 || parent instanceof AST_Sequence && node === parent.tail_node()) {
                 mark_escaped(d, scope, parent, parent, level + 1);
             } else if (parent instanceof AST_ObjectKeyVal && node === parent.value) {
diff --git a/test/compress/reduce_vars.js b/test/compress/reduce_vars.js
index c0713730..080307f5 100644
--- a/test/compress/reduce_vars.js
+++ b/test/compress/reduce_vars.js
@@ -5233,3 +5233,46 @@ escape_await: {
         })();
     }
 }
+
+escape_expansion: {
+    options = {
+        reduce_funcs: true,
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        function main() {
+            var thing = baz();
+            if (thing !== (thing = baz()))
+                console.log("FAIL");
+            else
+                console.log("PASS");
+        }
+        function foo() {}
+        function bar(...x) {
+            return x[0];
+        }
+        function baz() {
+            return bar(...[ foo ]);
+        }
+        main();
+    }
+    expect: {
+        function foo() {}
+        function baz() {
+            return function(...x) {
+                return x[0];
+            }(...[ foo ]);
+        }
+        (function() {
+            var thing = baz();
+            if (thing !== (thing = baz()))
+                console.log("FAIL");
+            else
+                console.log("PASS");
+        })();
+    }
+    expect_stdout: "PASS"
+    node_version: ">=6"
+}