diff --git a/drivers/telephony/phonedev.c b/drivers/telephony/phonedev.c
index 7a6db1c..e166fff 100644
--- a/drivers/telephony/phonedev.c
+++ b/drivers/telephony/phonedev.c
@@ -49,7 +49,7 @@
 	unsigned int minor = iminor(inode);
 	int err = 0;
 	struct phone_device *p;
-	struct file_operations *old_fops, *new_fops = NULL;
+	const struct file_operations *old_fops, *new_fops = NULL;
 
 	if (minor >= PHONE_NUM_DEVICES)
 		return -ENODEV;