diff --git a/parse-options.c b/parse-options.c
index 2fd5edbf53546ac449a077439aa59ca5dd992274..987b0157192b9fe4c7451d94f5948bdbd7f524bb 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -214,7 +214,7 @@ static int parse_long_opt(struct parse_opt_ctx_t *p, const char *arg,
 	return -2;
 }
 
-void check_typos(const char *arg, const struct option *options)
+static void check_typos(const char *arg, const struct option *options)
 {
 	if (strlen(arg) < 3)
 		return;