diff --git a/phosphor-power-supply/test/mock.hpp b/phosphor-power-supply/test/mock.hpp
index d494e14..d354c9f 100644
--- a/phosphor-power-supply/test/mock.hpp
+++ b/phosphor-power-supply/test/mock.hpp
@@ -50,7 +50,7 @@
                 (const, override));
 };
 
-class MockedGPIOReader : public GPIOInterface
+class MockedGPIOInterface : public GPIOInterfaceBase
 {
   public:
     MOCK_METHOD(int, read, (), (override));