diff --git a/phosphor-power-supply/test/mock.cpp b/phosphor-power-supply/test/mock.cpp
index fc7d658..94a4911 100644
--- a/phosphor-power-supply/test/mock.cpp
+++ b/phosphor-power-supply/test/mock.cpp
@@ -32,9 +32,9 @@
     util.reset();
 }
 
-std::unique_ptr<GPIOInterface> createGPIO(const std::string& /*namedGpio*/)
+std::unique_ptr<GPIOInterfaceBase> createGPIO(const std::string& /*namedGpio*/)
 {
-    return std::make_unique<MockedGPIOReader>();
+    return std::make_unique<MockedGPIOInterface>();
 }
 
 } // namespace psu