diff --git a/src/libs/vpatterndb/vpiecenode.cpp b/src/libs/vpatterndb/vpiecenode.cpp
index a475d6735..1401121eb 100644
--- a/src/libs/vpatterndb/vpiecenode.cpp
+++ b/src/libs/vpatterndb/vpiecenode.cpp
@@ -29,6 +29,8 @@
 #include "vpiecenode.h"
 #include "vpiecenode_p.h"
 
+#include <QDataStream>
+
 //---------------------------------------------------------------------------------------------------------------------
 VPieceNode::VPieceNode()
     : d(new VPieceNodeData)
diff --git a/src/libs/vpatterndb/vpiecenode.h b/src/libs/vpatterndb/vpiecenode.h
index 2653e472f..89c212cb2 100644
--- a/src/libs/vpatterndb/vpiecenode.h
+++ b/src/libs/vpatterndb/vpiecenode.h
@@ -36,6 +36,7 @@
 #include "../vmisc/def.h"
 
 class VPieceNodeData;
+class QDataStream;
 
 class VPieceNode
 {