diff --git a/phosphor-power-supply/test/mock.hpp b/phosphor-power-supply/test/mock.hpp
index a6a384b..25f48c1 100644
--- a/phosphor-power-supply/test/mock.hpp
+++ b/phosphor-power-supply/test/mock.hpp
@@ -28,6 +28,8 @@
                 (override));
     MOCK_METHOD(void, findHwmonDir, (), (override));
     MOCK_METHOD(const fs::path&, path, (), (const, override));
+    MOCK_METHOD(std::string, insertPageNum,
+                (const std::string& templateName, size_t page), (override));
 };
 } // namespace pmbus