diff --git a/filesystem/VFileSystem009.cpp b/filesystem/VFileSystem009.cpp
index c8ecf525..a2e37e35 100644
--- a/filesystem/VFileSystem009.cpp
+++ b/filesystem/VFileSystem009.cpp
@@ -81,7 +81,7 @@ static inline void CopyAndFixSlashes( char *p, const char *in, size_t size )
 	COM_FixSlashes( p );
 }
 
-class CXashFS : public IVFileSystem009
+class CXashFS : public IFileSystem
 {
 private:
 	class CSearchState
diff --git a/filesystem/VFileSystem009.h b/filesystem/VFileSystem009.h
index f42f2fb7..f8e0dab5 100644
--- a/filesystem/VFileSystem009.h
+++ b/filesystem/VFileSystem009.h
@@ -40,7 +40,7 @@ public:
 	virtual ~IBaseInterface() {}
 };
 
-class IVFileSystem009 : public IBaseInterface {
+class IFileSystem : public IBaseInterface {
 public:
 	virtual void Mount() = 0; /* linkage=_ZN11IFileSystem5MountEv */