diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 16e279b..3d2e023 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -3864,7 +3864,7 @@
 
 #endif
 
-static struct file_operations st_fops =
+static const struct file_operations st_fops =
 {
 	.owner =	THIS_MODULE,
 	.read =		st_read,