diff --git a/Source/Core/Core/HW/EXI/EXI_Device.h b/Source/Core/Core/HW/EXI/EXI_Device.h
index 89be2ce30c..ee622324b1 100644
--- a/Source/Core/Core/HW/EXI/EXI_Device.h
+++ b/Source/Core/Core/HW/EXI/EXI_Device.h
@@ -25,7 +25,7 @@ enum TEXIDevices : int
   // Converted to EXIDEVICE_MEMORYCARD internally.
   EXIDEVICE_MEMORYCARDFOLDER,
   EXIDEVICE_AGP,
-  EXIDEVICE_NONE = (u8)-1
+  EXIDEVICE_NONE = 0xFF
 };
 
 class IEXIDevice