diff --git a/modules/topoh/topoh_mod.c b/modules/topoh/topoh_mod.c
index d3f347eb269..f6e576ca200 100644
--- a/modules/topoh/topoh_mod.c
+++ b/modules/topoh/topoh_mod.c
@@ -330,7 +330,7 @@ int th_msg_received(void *data)
 		{
 			/* one Via in received reply -- it is for local generated request
 			 * - nothing to unhide unless is CANCEL/ACK */
-			if((get_cseq(&msg)->method_id)&(METHOD_CANCEL))
+			if(!((get_cseq(&msg)->method_id)&(METHOD_CANCEL)))
 				goto done;
 		}