diff --git a/src/libCom/errInc.c b/src/libCom/errInc.c
index b3e2c584f..d39b91f8e 100644
--- a/src/libCom/errInc.c
+++ b/src/libCom/errInc.c
@@ -21,4 +21,4 @@
 #include "errMdef.h"
 #ifdef VXLIST
 /* epics vxWorks  only*/
-#endif VXLIST
+#endif /* VXLIST */