diff --git a/src/plugins/qmldesigner/components/formeditor/resizecontroller.cpp b/src/plugins/qmldesigner/components/formeditor/resizecontroller.cpp
index 36b526f8579..2a8e492140b 100644
--- a/src/plugins/qmldesigner/components/formeditor/resizecontroller.cpp
+++ b/src/plugins/qmldesigner/components/formeditor/resizecontroller.cpp
@@ -165,6 +165,8 @@ ResizeController::~ResizeController()
 ResizeController &ResizeController::operator =(const ResizeController &other)
 {
     m_data = other.m_data;
+
+    return *this;
 }