diff --git a/src/modules/position_estimator_inav/position_estimator_inav_main.cpp b/src/modules/position_estimator_inav/position_estimator_inav_main.cpp
index d5228dcd10..40394a5bd4 100644
--- a/src/modules/position_estimator_inav/position_estimator_inav_main.cpp
+++ b/src/modules/position_estimator_inav/position_estimator_inav_main.cpp
@@ -134,6 +134,7 @@ int position_estimator_inav_main(int argc, char *argv[])
 {
 	if (argc < 2) {
 		usage("missing command");
+		return -1;
 	}
 
 	if (!strcmp(argv[1], "start")) {