diff --git a/phosphor-regulators/src/actions/set_device_action.hpp b/phosphor-regulators/src/actions/set_device_action.hpp
index 3c61208..7942840 100644
--- a/phosphor-regulators/src/actions/set_device_action.hpp
+++ b/phosphor-regulators/src/actions/set_device_action.hpp
@@ -20,11 +20,7 @@
 
 #include <string>
 
-namespace phosphor
-{
-namespace power
-{
-namespace regulators
+namespace phosphor::power::regulators
 {
 
 /**
@@ -86,6 +82,4 @@
     const std::string deviceID{};
 };
 
-} // namespace regulators
-} // namespace power
-} // namespace phosphor
+} // namespace phosphor::power::regulators