diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c
index 41c1578..61f406f2 100644
--- a/net/ipv4/tcp_probe.c
+++ b/net/ipv4/tcp_probe.c
@@ -143,7 +143,7 @@
 	return error ? error : cnt;
 }
 
-static struct file_operations tcpprobe_fops = {
+static const struct file_operations tcpprobe_fops = {
 	.owner	 = THIS_MODULE,
 	.open	 = tcpprobe_open,
 	.read    = tcpprobe_read,