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-rw-r--r--util/cbfstool/cbfstool.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/util/cbfstool/cbfstool.c b/util/cbfstool/cbfstool.c
index 6b520628f1..4202801471 100644
--- a/util/cbfstool/cbfstool.c
+++ b/util/cbfstool/cbfstool.c
@@ -563,7 +563,7 @@ int main(int argc, char **argv)
break;
/* filter out illegal long options */
- if (index(commands[i].optstring, c) == NULL) {
+ if (strchr(commands[i].optstring, c) == NULL) {
/* TODO maybe print actual long option instead */
printf("%s: invalid option -- '%c'\n",
argv[0], c);