diff --git a/src/NUglify.Tests/TestData/JS/Expected/Bugs/Bug391.js b/src/NUglify.Tests/TestData/JS/Expected/Bugs/Bug391.js
new file mode 100644
index 00000000..c4f20a2c
--- /dev/null
+++ b/src/NUglify.Tests/TestData/JS/Expected/Bugs/Bug391.js
@@ -0,0 +1 @@
+function func(){return{...{arrow:()=>{},anonymous:function(){},named:function(){}}}}
\ No newline at end of file
diff --git a/src/NUglify.Tests/TestData/JS/Input/Bugs/Bug391.js b/src/NUglify.Tests/TestData/JS/Input/Bugs/Bug391.js
new file mode 100644
index 00000000..81cce72a
--- /dev/null
+++ b/src/NUglify.Tests/TestData/JS/Input/Bugs/Bug391.js
@@ -0,0 +1,9 @@
+function func() {
+	return {
+		...{
+			arrow: () => { },
+			anonymous: function () { },
+			named: function name() { },
+		}
+	};
+}
\ No newline at end of file