diff --git a/y2017/constants.h b/y2017/constants.h
index 9c0f3c2..c70b0ea 100644
--- a/y2017/constants.h
+++ b/y2017/constants.h
@@ -12,8 +12,7 @@
 #include "y2017/control_loops/superstructure/intake/intake_plant.h"
 #include "y2017/control_loops/superstructure/shooter/shooter_plant.h"
 
-namespace y2017 {
-namespace constants {
+namespace y2017::constants {
 
 // Has all of our "constants", except the ones that come from other places. The
 // ones which change between robots are put together with a workable way to
@@ -143,7 +142,6 @@
 // them.
 const Values &GetValuesForTeam(uint16_t team_number);
 
-}  // namespace constants
-}  // namespace y2017
+}  // namespace y2017::constants
 
 #endif  // Y2017_CONSTANTS_H_