diff --git a/src/imageformats/rle_p.h b/src/imageformats/rle_p.h
index 2aa6055..86fa051 100644
--- a/src/imageformats/rle_p.h
+++ b/src/imageformats/rle_p.h
@@ -22,6 +22,7 @@
 #define KIMAGEFORMATS_RLE_H
 
 #include <QDebug>
+#include <QDataStream>
 
 /**
  * The RLEVariant to use.