diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarycategoriesmodel.cpp b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarycategoriesmodel.cpp
index f104cb978fb..0d6d1baccc1 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarycategoriesmodel.cpp
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarycategoriesmodel.cpp
@@ -29,6 +29,7 @@
 #include <utils/algorithm.h>
 #include <utils/qtcassert.h>
 
+#include <QDebug>
 #include <QVariant>
 #include <QMetaProperty>
 #include <QMetaObject>