diff --git a/drivers/net/wireless/ath/ath9k/spectral.c b/drivers/net/wireless/ath/ath9k/spectral.c
index 11adb5eb51ccd701abd1165b07acad22c8c02965..99f4de95c264b0638108d58820efcb9b8390e8fc 100644
--- a/drivers/net/wireless/ath/ath9k/spectral.c
+++ b/drivers/net/wireless/ath/ath9k/spectral.c
@@ -497,7 +497,7 @@ static int remove_buf_file_handler(struct dentry *dentry)
 	return 0;
 }
 
-struct rchan_callbacks rfs_spec_scan_cb = {
+static struct rchan_callbacks rfs_spec_scan_cb = {
 	.create_buf_file = create_buf_file_handler,
 	.remove_buf_file = remove_buf_file_handler,
 };