diff --git a/src/video/vid_s3.c b/src/video/vid_s3.c
index 8e2523bbb..7f310a2d1 100644
--- a/src/video/vid_s3.c
+++ b/src/video/vid_s3.c
@@ -2679,7 +2679,7 @@ s3_updatemapping(s3_t *s3)
 			} else {
 				if (s3->chip >= S3_TRIO64V)
 					s3->linear_base &= 0xfc000000;
-				else
+				else if (s3->chip == S3_VISION968)
 					s3->linear_base &= 0xfe000000;
 				pclog("Linear mapping enabled at %08x, size = %08x\n", s3->linear_base, s3->linear_size);
 				mem_mapping_set_addr(&s3->linear_mapping, s3->linear_base, s3->linear_size);