diff --git a/drivers/video/amifb.c b/drivers/video/amifb.c
index e5d6b56d4447e274d0db3f8eedf68cda99bfb53e..603f84fae6a1b0a564d1c78e9679f7498ade5196 100644
--- a/drivers/video/amifb.c
+++ b/drivers/video/amifb.c
@@ -2295,7 +2295,7 @@ static int __init amifb_probe(struct platform_device *pdev)
 			    defmode = amiga_vblank == 50 ? DEFMODE_PAL
 							 : DEFMODE_NTSC;
 			if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
-			    VIDEOMEMSIZE_ECS_1M)
+			    VIDEOMEMSIZE_ECS_2M)
 				fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_2M;
 			else
 				fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_1M;
@@ -2312,7 +2312,7 @@ static int __init amifb_probe(struct platform_device *pdev)
 			maxfmode = TAG_FMODE_4;
 			defmode = DEFMODE_AGA;
 			if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
-			    VIDEOMEMSIZE_AGA_1M)
+			    VIDEOMEMSIZE_AGA_2M)
 				fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_2M;
 			else
 				fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_1M;