diff --git a/src/backend/x11.c b/src/backend/x11.c
index 49afe5e..55faee9 100644
--- a/src/backend/x11.c
+++ b/src/backend/x11.c
@@ -78,6 +78,7 @@ static void wait_map(MwLL handle, int sync) {
 		XSync(handle->x11.display, False);
 
 		XMapWindow(handle->x11.display, handle->x11.window);
+		XSync(handle->x11.display, False);
 
 		if(!sync) return;
 		do {
@@ -95,6 +96,7 @@ static void wait_unmap(MwLL handle, int sync) {
 		XSync(handle->x11.display, False);
 
 		XUnmapWindow(handle->x11.display, handle->x11.window);
+		XSync(handle->x11.display, False);
 
 		if(!sync) return;
 		do {