diff --git a/src/os_win32.c b/src/os_win32.c
index cac8223..3403ed6 100644
--- a/src/os_win32.c
+++ b/src/os_win32.c
@@ -5102,6 +5102,8 @@
 failed:
 # ifdef FEAT_CHANNEL
     channel_free(channel);
+# else
+    ;  /* make compiler happy */
 # endif
 }