1 files changed, 1 insertions, 1 deletions

diff --git a/toxcore/TCP_server.c b/toxcore/TCP_server.c
index d055215e..b900db6b 100644
--- a/toxcore/TCP_server.c
+++ b/toxcore/TCP_server.c
@@ -619,7 +619,7 @@ static int rm_connection_index(TCP_Server *TCP_server, TCP_Secure_Connection *co
     }
 }
 
-static int handle_onion_recv_1(void *object, IP_Port dest, uint8_t *data, uint16_t length)
+static int handle_onion_recv_1(void *object, IP_Port dest, const uint8_t *data, uint16_t length)
 {
     TCP_Server *TCP_server = object;
     uint32_t index = dest.ip.ip6.uint32[0];