diff --git a/swaymsg/main.c b/swaymsg/main.c
index a0ef7e3d9..65cc4bbb1 100644
--- a/swaymsg/main.c
+++ b/swaymsg/main.c
@@ -493,6 +493,7 @@ int main(int argc, char **argv) {
 					printf("%s\n", json_object_to_json_string_ext(obj,
 						JSON_C_TO_STRING_PRETTY | JSON_C_TO_STRING_SPACED));
 				}
+				fflush(stdout);
 				json_object_put(obj);
 			}