1 files changed, 2 insertions, 1 deletions
diff --git a/test/driver.c b/test/driver.c
index b365a5f71..acf79df05 100644
--- a/test/driver.c
+++ b/test/driver.c
@@ -5,6 +5,7 @@
 ** against the current mruby implementation.
 */
 
+
 #include <stdlib.h>
 #include <string.h>
 
@@ -72,7 +73,7 @@ main(int argc, char **argv)
     return EXIT_FAILURE;
   }
 
-  if (argc == 2 && strncmp(argv[1], "-v", 2) == 0) {
+  if (argc == 2 && argv[1][0] == '-' && argv[1][1] == 'v') {
     printf("verbose mode: enable\n\n");
     mrb_gv_set(mrb, mrb_intern(mrb, "$mrbtest_verbose"), mrb_true_value());
   }