1 files changed, 4 insertions, 2 deletions
diff --git a/MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c b/MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c
index e2c86b07b4..7ff7f1ca67 100644
--- a/MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c
+++ b/MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c
@@ -1084,7 +1084,6 @@ USBKeyboardRegisterKeyNotify (
 
   @retval EFI_SUCCESS              The notification function was unregistered successfully.
   @retval EFI_INVALID_PARAMETER    The NotificationHandle is invalid
-  @retval EFI_NOT_FOUND            Cannot find the matching entry in database.
 
 **/
 EFI_STATUS
@@ -1133,6 +1132,9 @@ USBKeyboardUnregisterKeyNotify (
     }
   }
 
-  return EFI_NOT_FOUND;  
+  //
+  // Cannot find the matching entry in database.
+  //
+  return EFI_INVALID_PARAMETER;  
 }