diff --git a/csr.cpp b/csr.cpp
index cf74f53..1ea3991 100644
--- a/csr.cpp
+++ b/csr.cpp
@@ -10,11 +10,8 @@
 #include <xyz/openbmc_project/Certs/error.hpp>
 #include <xyz/openbmc_project/Common/error.hpp>
 
-namespace phosphor
+namespace phosphor::certs
 {
-namespace certs
-{
-
 using X509_REQ_Ptr = std::unique_ptr<X509_REQ, decltype(&::X509_REQ_free)>;
 using BIO_Ptr = std::unique_ptr<BIO, decltype(&::BIO_free_all)>;
 using InternalFailure =
@@ -77,5 +74,4 @@
     return pem;
 }
 
-} // namespace certs
-} // namespace phosphor
+} // namespace phosphor::certs