1 files changed, 1 insertions, 1 deletions

diff --git a/auto_tests/tox_many_test.c b/auto_tests/tox_many_test.c
index 49933234..62c7c621 100644
--- a/auto_tests/tox_many_test.c
+++ b/auto_tests/tox_many_test.c
@@ -123,7 +123,7 @@ loop_top:
         tox_kill(toxes[i]);
     }
 
-    printf("test_many_clients succeeded, took %ld seconds\n", time(nullptr) - cur_time);
+    printf("test_many_clients succeeded, took %lu seconds\n", (unsigned long)(time(nullptr) - cur_time));
 }
 
 int main(void)