diff --git a/yarp/config.yml b/yarp/config.yml
index f1df755d891476..a7fb8651ad3bd7 100644
--- a/yarp/config.yml
+++ b/yarp/config.yml
@@ -797,7 +797,7 @@ nodes:
       - name: name_loc
         type: location
       - name: value
-        type: node?
+        type: node
       - name: operator_loc
         type: location?
     comment: |