diff --git a/src/udp/udp_client.c b/src/udp/udp_client.c
index 46c814a..465f859 100644
--- a/src/udp/udp_client.c
+++ b/src/udp/udp_client.c
@@ -17,9 +17,9 @@ static inline void handle_receive(struct pbuf *p, const ip_addr_t *addr, u16_t p
     pbuf_free(p);
 }
 
-static inline void udp_receive_callback(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port)
+static void udp_receive_callback(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port)
 {
-    udp_client = *(udp_client_t *)&arg;
+    udp_client_t *udp_client_received_data = (udp_client_t *)arg;
     handle_receive(p, addr, port);
 }