diff --git a/reactos/drivers/usb/miniport/usbohci/ohci-hub.c b/reactos/drivers/usb/miniport/usbohci/ohci-hub.c
index a7584a499af..a3a1c3bca6c 100644
--- a/reactos/drivers/usb/miniport/usbohci/ohci-hub.c
+++ b/reactos/drivers/usb/miniport/usbohci/ohci-hub.c
@@ -153,7 +153,7 @@ static int ohci_hub_control (
 	u16		typeReq,
 	u16		wValue,
 	u16		wIndex,
-	char		*buf,
+	u8		*buf,
 	u16		wLength
 ) {
 	struct ohci_hcd	*ohci = hcd_to_ohci (hcd);
diff --git a/reactos/drivers/usb/miniport/usbuhci/uhci-hub.c b/reactos/drivers/usb/miniport/usbuhci/uhci-hub.c
index 559b81586c0..f5d16cc7039 100644
--- a/reactos/drivers/usb/miniport/usbuhci/uhci-hub.c
+++ b/reactos/drivers/usb/miniport/usbuhci/uhci-hub.c
@@ -54,7 +54,7 @@ static int uhci_hub_status_data(struct usb_hcd *hcd, char *buf)
 
 /* size of returned buffer is part of USB spec */
 static int uhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
-			u16 wIndex, char *buf, u16 wLength)
+			u16 wIndex, u8 *buf, u16 wLength)
 {
 	struct uhci_hcd *uhci = hcd_to_uhci(hcd);
 	int i, status, retval = 0, len = 0;