diff --git a/utils/set_test_modules b/utils/set_test_modules
index da2706dd40..f9f1d91e4a 100644
--- a/utils/set_test_modules
+++ b/utils/set_test_modules
@@ -1,7 +1,7 @@
 #!/bin/bash -eu
 # This file shoud be source'd (. set_test_modules) rather than executed.
 #
-# Set SKIP_GIT_TEST="True" or use -I to prevent git modification comparison.
+# Set SKIP_GIT_TEST="True" or use -a to prevent git modification comparison.
 #
 
 RED="\033[31;1m"