diff --git a/demos/hello_wolf/yaml/hello_wolf_config.yaml b/demos/hello_wolf/yaml/hello_wolf_config.yaml
index 4be898bc1a22d0af902f53e1280856cc76a67d74..628f84acd19f640e1b09f3e382bb508e5c1fb1c7 100644
--- a/demos/hello_wolf/yaml/hello_wolf_config.yaml
+++ b/demos/hello_wolf/yaml/hello_wolf_config.yaml
@@ -18,6 +18,9 @@ config:
     tree_manager:
       type: "none"
   
+  map:
+    type: "MapBase"
+  
   solver:
     max_num_iterations: 100
     verbose: 0