diff --git a/auto_tests/tox_test.c b/auto_tests/tox_test.c
index 65ce304c..c78bc1f5 100644
--- a/auto_tests/tox_test.c
+++ b/auto_tests/tox_test.c
@@ -70,7 +70,8 @@ void print_typingchange(Tox *m, int friendnumber, uint8_t typing, void *userdata
 
 uint32_t custom_packet;
 
-int handle_custom_packet(void *object, const uint8_t *data, uint32_t len)
+int handle_custom_packet(Tox* m, uint32_t friend_num, const uint8_t *data,
+        uint32_t len, void* object)
 {
     uint8_t number = *((uint32_t *)object);