diff --git a/harbour/contrib/hgf/win32/win32.ch b/harbour/contrib/hgf/win32/win32.ch
index b09d3816c1..a71afc8074 100644
--- a/harbour/contrib/hgf/win32/win32.ch
+++ b/harbour/contrib/hgf/win32/win32.ch
@@ -74,4 +74,7 @@
                               WS_SYSMENU + WS_THICKFRAME + WS_MINIMIZEBOX + ;
                               WS_MAXIMIZEBOX)
 
+#define WS_CHILD     0x40000000
+#define WS_TABSTOP   0x00010000
+
 #endif
\ No newline at end of file