diff --git a/y2014/control_loops/drivetrain/drivetrain_base.cc b/y2014/control_loops/drivetrain/drivetrain_base.cc
index be4f238..d9f396e 100644
--- a/y2014/control_loops/drivetrain/drivetrain_base.cc
+++ b/y2014/control_loops/drivetrain/drivetrain_base.cc
@@ -13,8 +13,7 @@
 
 namespace chrono = ::std::chrono;
 
-namespace y2014 {
-namespace control_loops {
+namespace y2014::control_loops {
 
 const DrivetrainConfig<double> &GetDrivetrainConfig() {
   // TODO(austin): Switch over to using the profile.
@@ -51,5 +50,4 @@
   return kDrivetrainConfig;
 };
 
-}  // namespace control_loops
-}  // namespace y2014
+}  // namespace y2014::control_loops