diff --git a/kcm/src/widget.cpp b/kcm/src/widget.cpp
--- a/kcm/src/widget.cpp
+++ b/kcm/src/widget.cpp
@@ -103,6 +103,7 @@
 Widget::~Widget()
 {
     clearOutputIdentifiers();
+    delete ui;
 }
 
 bool Widget::eventFilter(QObject* object, QEvent* event)