diff --git a/ot_udp.h b/ot_udp.h
index 39356cb..dea10ab 100644
--- a/ot_udp.h
+++ b/ot_udp.h
@@ -6,6 +6,6 @@
 #ifndef __OT_UDP_H__
 #define __OT_UDP_H__
 
-void handle_udp6( int64 serversocket, struct ot_workstruct *ws );
+int handle_udp6( int64 serversocket, struct ot_workstruct *ws );
 
 #endif