diff --git a/milsko.xml b/milsko.xml
index 356b935..7b4f273 100644
--- a/milsko.xml
+++ b/milsko.xml
@@ -756,6 +756,13 @@
 					<arguments>
 						<pointer name="menu" />
 						<struct defname="MwPoint" pointer="yes" name="point" />
+						<integer name="diff_calc" />
+					</arguments>
+				</function>
+				<function name="GetSize">
+					<arguments>
+						<pointer name="menu" />
+						<struct defname="MwRect" pointer="yes" name="rect" />
 					</arguments>
 				</function>
 			</functions>
diff --git a/src/widget/submenu.c b/src/widget/submenu.c
index c937a9c..b681c98 100644
--- a/src/widget/submenu.c
+++ b/src/widget/submenu.c
@@ -8,6 +8,8 @@ static int wcreate(MwWidget handle) {
 	MwSetDefault(handle);
 	MwSetInteger(handle, MwNleftPadding, 0);
 
+	handle->internal = NULL;
+
 	return 0;
 }