diff --git a/drivers/video/sis/sis_main.c b/drivers/video/sis/sis_main.c
index 346d645..7e17ee9 100644
--- a/drivers/video/sis/sis_main.c
+++ b/drivers/video/sis/sis_main.c
@@ -1129,7 +1129,7 @@
 	switch(var->bits_per_pixel) {
 	case 8:
 		var->red.offset = var->green.offset = var->blue.offset = 0;
-		var->red.length = var->green.length = var->blue.length = 6;
+		var->red.length = var->green.length = var->blue.length = 8;
 		break;
 	case 16:
 		var->red.offset = 11;