1 files changed, 1 insertions, 1 deletions

diff --git a/tools/testing/selftests/networking/timestamping/rxtimestamp.c b/tools/testing/selftests/networking/timestamping/rxtimestamp.c
index 00f286661dcd..dd4162fc0419 100644
--- a/tools/testing/selftests/networking/timestamping/rxtimestamp.c
+++ b/tools/testing/selftests/networking/timestamping/rxtimestamp.c
@@ -341,7 +341,7 @@ int main(int argc, char **argv)
                         return 0;
                 case 'n':
                         t = atoi(optarg);
-                        if (t > ARRAY_SIZE(test_cases))
+                        if (t >= ARRAY_SIZE(test_cases))
                                 error(1, 0, "Invalid test case: %d", t);
                         all_tests = false;
                         test_cases[t].enabled = true;