diff --git a/stepmania/src/arch/MemoryCard/MemoryCardDriver_Linux.h b/stepmania/src/arch/MemoryCard/MemoryCardDriver_Linux.h
index 3260bdb6dc..f5bb4ec336 100644
--- a/stepmania/src/arch/MemoryCard/MemoryCardDriver_Linux.h
+++ b/stepmania/src/arch/MemoryCard/MemoryCardDriver_Linux.h
@@ -11,6 +11,7 @@ public:
 	virtual bool StorageDevicesChanged();
 	virtual void GetStorageDevices( vector<UsbStorageDevice>& vStorageDevicesOut );
 	virtual bool MountAndTestWrite( UsbStorageDevice* pDevice, CString sMountPoint );
+	virtual void Unmount( UsbStorageDevice* pDevice, CString sMountPoint );
 	virtual void Flush( UsbStorageDevice* pDevice );
 	virtual void ResetUsbStorage();
 protected: