diff --git a/tools/aapt2/test/Common.h b/tools/aapt2/test/Common.h
index 83a0f3f..e48668c 100644
--- a/tools/aapt2/test/Common.h
+++ b/tools/aapt2/test/Common.h
@@ -98,6 +98,10 @@
     return source_;
   }
 
+  bool GetModificationTime(struct tm* buf) const override {
+    return false;
+  };
+
  private:
   DISALLOW_COPY_AND_ASSIGN(TestFile);