diff --git a/headers/private/app/ServerProtocol.h b/headers/private/app/ServerProtocol.h
index 666846b771..8275ad5cc8 100644
--- a/headers/private/app/ServerProtocol.h
+++ b/headers/private/app/ServerProtocol.h
@@ -305,6 +305,7 @@ enum {
 	AS_ROOTLAYER_DO_REDRAW,
 	AS_ROOTLAYER_LAYER_MOVE,
 	AS_ROOTLAYER_LAYER_RESIZE,
+	AS_ROOTLAYER_LAYER_SCROLL,
 	AS_ROOTLAYER_ADD_TO_SUBSET,
 	AS_ROOTLAYER_REMOVE_FROM_SUBSET,
 	AS_ROOTLAYER_WINBORDER_SET_WORKSPACES,