diff --git a/hardware.h b/hardware.h
index 82b94e4..c573117 100644
--- a/hardware.h
+++ b/hardware.h
@@ -34,6 +34,7 @@
   std::string GetHardwareClass() const override;
   std::string GetFirmwareVersion() const override;
   std::string GetECVersion() const override;
+  int GetPowerwashCount() const override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Hardware);