3 files changed, 3 insertions, 3 deletions
diff --git a/t/helper/test-example-tap.c b/t/helper/test-example-tap.c
index 914af88e0a..229d495ecf 100644
--- a/t/helper/test-example-tap.c
+++ b/t/helper/test-example-tap.c
@@ -70,7 +70,7 @@ static void t_empty(void)
 	; /* empty */
 }
 
-int cmd__example_tap(int argc, const char **argv)
+int cmd__example_tap(int argc UNUSED, const char **argv UNUSED)
 {
 	check(1);
 
diff --git a/t/helper/test-hashmap.c b/t/helper/test-hashmap.c
index 195e6278be..7782ae585e 100644
--- a/t/helper/test-hashmap.c
+++ b/t/helper/test-hashmap.c
@@ -138,7 +138,7 @@ static void perf_hashmap(unsigned int method, unsigned int rounds)
  *
  * perfhashmap method rounds -> test hashmap.[ch] performance
  */
-int cmd__hashmap(int argc, const char **argv)
+int cmd__hashmap(int argc UNUSED, const char **argv UNUSED)
 {
 	struct string_list parts = STRING_LIST_INIT_NODUP;
 	struct strbuf line = STRBUF_INIT;
diff --git a/t/helper/test-mergesort.c b/t/helper/test-mergesort.c
index 42ccc87051..328bfe2977 100644
--- a/t/helper/test-mergesort.c
+++ b/t/helper/test-mergesort.c
@@ -122,7 +122,7 @@ static const struct dist *get_dist_by_name(const char *name)
 	return NULL;
 }
 
-static void mode_copy(int *arr, int n)
+static void mode_copy(int *arr UNUSED, int n UNUSED)
 {
 	/* nothing */
 }