1 files changed, 1 insertions, 1 deletions
diff --git a/src/test.h b/src/test.h
index c27e051..c8c2758 100644
--- a/src/test.h
+++ b/src/test.h
@@ -43,7 +43,7 @@ struct VirtualFileSystem : public DiskInterface {
   void Create(const string& path, int time, const string& contents);
 
   // DiskInterface
-  virtual int Stat(const string& path);
+  virtual TimeStamp Stat(const string& path);
   virtual bool MakeDir(const string& path);
   virtual string ReadFile(const string& path, string* err);
   virtual int RemoveFile(const string& path);