diff --git a/bin/linux/athrill b/bin/linux/athrill
index 0777e6c5..f4914557 100755
Binary files a/bin/linux/athrill and b/bin/linux/athrill differ
diff --git a/sample/barmetal/step6/arg_sakura.txt b/sample/barmetal/step6/arg_sakura.txt
index e6c8c051..e94933b2 100644
--- a/sample/barmetal/step6/arg_sakura.txt
+++ b/sample/barmetal/step6/arg_sakura.txt
@@ -1,2 +1,2 @@
--l 42 ./main.c
+-l 9 ./vector.S
 
diff --git a/trunk/src/bin/athrill b/trunk/src/bin/athrill
index 0777e6c5..f4914557 100755
Binary files a/trunk/src/bin/athrill and b/trunk/src/bin/athrill differ
diff --git a/trunk/src/main/option/option.c b/trunk/src/main/option/option.c
index 39b14dc7..040bf0ea 100644
--- a/trunk/src/main/option/option.c
+++ b/trunk/src/main/option/option.c
@@ -100,7 +100,10 @@ CmdOptionType *parse_args(int argc, const char* argv[])
 	  printf("t = %llu\n", cmd_option.timeout);
 	  printf("p = %s\n", (cmd_option.fifocfgpath != NULL) ? cmd_option.fifocfgpath : "NULL");
 #endif
-
+		if (optind >= argc) {
+			printf("ERROR: not found <load file>\n");
+			return NULL;
+		}
 	  memcpy(cmd_option.load_file.filepath.str, argv[optind], strlen(argv[optind]));
 	  cmd_option.load_file.filepath.str[strlen(argv[optind])] = '\0';
 	  cmd_option.load_file.filepath.len = strlen(argv[optind]);