diff --git a/webots/protos/ZumoComSystem.proto b/webots/protos/ZumoComSystem.proto
index 58b5bb31..0569cc42 100644
--- a/webots/protos/ZumoComSystem.proto
+++ b/webots/protos/ZumoComSystem.proto
@@ -27,6 +27,9 @@ PROTO ZumoComSystem [
         name "serialComTx"
         type "serial"
       }
+      GPS {
+        name "gps"
+      }
     ]
     name IS name
     description "DroidControlShip"