diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 12d58a7..ad59abb 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -2280,7 +2280,8 @@
 	} else if (code == MT_ST_SET_CLN) {
 		value = (options & ~MT_ST_OPTIONS) & 0xff;
 		if (value != 0 &&
-		    value < EXTENDED_SENSE_START && value >= SCSI_SENSE_BUFFERSIZE)
+			(value < EXTENDED_SENSE_START ||
+				value >= SCSI_SENSE_BUFFERSIZE))
 			return (-EINVAL);
 		STp->cln_mode = value;
 		STp->cln_sense_mask = (options >> 8) & 0xff;