diff --git a/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.h b/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.h
index 9fdf181cdc..ce398ec210 100644
--- a/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.h
+++ b/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.h
@@ -22,12 +22,6 @@
 
 #include "WII_IPC_HLE_Device.h"
 
-namespace DiscIO
-{
-    class IVolume;
-    class IFileSystem;
-}
-
 class CWII_IPC_HLE_Device_sdio_slot0 : public IWII_IPC_HLE_Device
 {
 public: