diff --git a/src/private/quick/QWidgetAdapter_quick.cpp b/src/private/quick/QWidgetAdapter_quick.cpp
index c5132d40..818ff8ec 100644
--- a/src/private/quick/QWidgetAdapter_quick.cpp
+++ b/src/private/quick/QWidgetAdapter_quick.cpp
@@ -339,7 +339,7 @@ void QWidgetAdapter::setMinimumSize(QSize sz)
 
 void QWidgetAdapter::setMaximumSize(QSize sz)
 {
-    if (minimumSize() != sz) {
+    if (maximumSize() != sz) {
         setProperty("kddockwidgets_max_size", sz);
         updateGeometry();
     }