diff --git a/drivers/ide/pci/cs5535.c b/drivers/ide/pci/cs5535.c
index ce44e38..9bd526d 100644
--- a/drivers/ide/pci/cs5535.c
+++ b/drivers/ide/pci/cs5535.c
@@ -116,7 +116,7 @@
 
 		reg &= 0x80000000UL;  /* Preserve the PIO format bit */
 
-		if (speed >= XFER_UDMA_0 && speed <= XFER_UDMA_7)
+		if (speed >= XFER_UDMA_0 && speed <= XFER_UDMA_4)
 			reg |= cs5535_udma_timings[speed - XFER_UDMA_0];
 		else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2)
 			reg |= cs5535_mwdma_timings[speed - XFER_MW_DMA_0];