diff --git a/net/phonet/sysctl.c b/net/phonet/sysctl.c
index 0e3347b..7b5749ee 100644
--- a/net/phonet/sysctl.c
+++ b/net/phonet/sysctl.c
@@ -95,7 +95,7 @@
 	{ .ctl_name = 0 }
 };
 
-struct ctl_path phonet_ctl_path[] = {
+static struct ctl_path phonet_ctl_path[] = {
 	{ .procname = "net", .ctl_name = CTL_NET, },
 	{ .procname = "phonet", .ctl_name = CTL_UNNUMBERED, },
 	{ },