diff --git a/src/channel.c b/src/channel.c
index 79cca79..1680d0d 100644
--- a/src/channel.c
+++ b/src/channel.c
@@ -3559,7 +3559,7 @@
 
 	ioctlsocket(fd, FIONBIO, &val);
 #else
-	fcntl(fd, F_SETFL, O_NONBLOCK);
+	(void)fcntl(fd, F_SETFL, O_NONBLOCK);
 #endif
 	ch_part->ch_nonblocking = TRUE;
     }