diff --git a/sys/compat/linuxkpi/common/include/linux/string_helpers.h b/sys/compat/linuxkpi/common/include/linux/string_helpers.h
--- a/sys/compat/linuxkpi/common/include/linux/string_helpers.h
+++ b/sys/compat/linuxkpi/common/include/linux/string_helpers.h
@@ -66,4 +66,6 @@
 		return "disable";
 }
 
+#define	str_disable_enable(_v)		str_enable_disable(!(_v))
+
 #endif