diff --git a/hardware_chromeos.h b/hardware_chromeos.h
index 8e9ad1e..6bdd37a 100644
--- a/hardware_chromeos.h
+++ b/hardware_chromeos.h
@@ -56,7 +56,7 @@
   bool GetNonVolatileDirectory(base::FilePath* path) const override;
   bool GetPowerwashSafeDirectory(base::FilePath* path) const override;
   bool GetFirstActiveOmahaPingSent() const override;
-  void SetFirstActiveOmahaPingSent() override;
+  bool SetFirstActiveOmahaPingSent() override;
 
  private:
   friend class HardwareChromeOSTest;