diff --git a/ChangeLog b/ChangeLog
index ec65fb11e..43b5d59d3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-12-13  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* grub-core/bus/usb/ohci.c (grub_ohci_check_transfer): Add an unsigned
+	specification.
+
 2011-12-13  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	* include/grub/loader.h (grub_loader_register_preboot_hook):
diff --git a/grub-core/bus/usb/ohci.c b/grub-core/bus/usb/ohci.c
index 2291619cb..3f5ca7b03 100644
--- a/grub-core/bus/usb/ohci.c
+++ b/grub-core/bus/usb/ohci.c
@@ -1152,8 +1152,8 @@ grub_ohci_check_transfer (grub_usb_controller_t dev,
     return parse_halt (dev, transfer, actual);
 
   /* Finished ED detection */
-  if ( (grub_le_to_cpu32 (cdata->ed_virt->td_head) & ~0xf) ==
-       (grub_le_to_cpu32 (cdata->ed_virt->td_tail) & ~0xf) ) /* Empty ED */
+  if ( (grub_le_to_cpu32 (cdata->ed_virt->td_head) & ~0xfU) ==
+       (grub_le_to_cpu32 (cdata->ed_virt->td_tail) & ~0xfU) ) /* Empty ED */
     {
       /* Check the HALT bit */
       /* It looks like nonsense - it was tested previously...