diff --git a/src/plasma/theme.cpp b/src/plasma/theme.cpp
index 86ebdb324..8b6579a75 100644
--- a/src/plasma/theme.cpp
+++ b/src/plasma/theme.cpp
@@ -29,6 +29,7 @@
 #include <QStringBuilder>
 #include <QTimer>
 #include <QThread>
+#include <QFontMetrics>
 
 #include "config-plasma.h"