diff --git a/src/gtk/nonownedwnd.cpp b/src/gtk/nonownedwnd.cpp
index 862ac8b32b..95e4288a85 100644
--- a/src/gtk/nonownedwnd.cpp
+++ b/src/gtk/nonownedwnd.cpp
@@ -24,6 +24,8 @@
 #endif
 
 #ifndef WX_PRECOMP
+    #include "wx/dcclient.h"
+    #include "wx/dcmemory.h"
     #include "wx/nonownedwnd.h"
     #include "wx/region.h"
 #endif // WX_PRECOMP