diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index bd977be..54f50b0 100644
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -1597,7 +1597,7 @@
 		u32 tag_mask = 1;
 		u8 tag_number = 0;
 		while (tag_mask & dcb->tag_mask
-		       && tag_number <= dcb->max_command) {
+		       && tag_number < dcb->max_command) {
 			tag_mask = tag_mask << 1;
 			tag_number++;
 		}