diff --git a/y2018/constants.cc b/y2018/constants.cc
index 2ad0c97..70c58f0 100644
--- a/y2018/constants.cc
+++ b/y2018/constants.cc
@@ -135,7 +135,7 @@
 }
 
 const Values &DoGetValues() {
-  uint16_t team = ::aos::network::GetTeamNumber();
+  const uint16_t team = ::aos::network::GetTeamNumber();
   LOG(INFO, "creating a Constants for team %" PRIu16 "\n", team);
   return GetValuesForTeam(team);
 }