1 files changed, 6 insertions, 1 deletions

diff --git a/sys/sys/ioccom.h b/sys/sys/ioccom.h
index c6e00df0e3f8b..b767e573d81a7 100644
--- a/sys/sys/ioccom.h
+++ b/sys/sys/ioccom.h
@@ -67,7 +67,12 @@
 #include <sys/cdefs.h>
 
 __BEGIN_DECLS
-int	ioctl(int, unsigned long, ...);
+/*
+ * use parens around the ioctl so that people can define ioctl as a macro.
+ * Note: This will go away in the future, as soon as the current abusers
+ * have been fixed.
+ */
+int	(ioctl)(int, unsigned long, ...);
 __END_DECLS
 
 #endif