diff --git a/src/systemcmds/tests/test_dataman.c b/src/systemcmds/tests/test_dataman.c
index f3b4afc81f..4063ca9a08 100644
--- a/src/systemcmds/tests/test_dataman.c
+++ b/src/systemcmds/tests/test_dataman.c
@@ -68,7 +68,7 @@ task_main(int argc, char *argv[])
 {
 	char buffer[DM_MAX_DATA_SIZE];
 
-	PX4_INFO("Starting dataman test task %s", argv[1]);
+	PX4_INFO("Starting dataman test task %s", argv[2]);
 	/* try to read an invalid item */
 	int my_id = atoi(argv[2]);