diff --git a/phosphor-regulators/src/rail.hpp b/phosphor-regulators/src/rail.hpp
index d5d3b13..247e8ee 100644
--- a/phosphor-regulators/src/rail.hpp
+++ b/phosphor-regulators/src/rail.hpp
@@ -17,11 +17,7 @@
 
 #include <string>
 
-namespace phosphor
-{
-namespace power
-{
-namespace regulators
+namespace phosphor::power::regulators
 {
 
 /**
@@ -69,6 +65,4 @@
     const std::string id{};
 };
 
-} // namespace regulators
-} // namespace power
-} // namespace phosphor
+} // namespace phosphor::power::regulators