diff --git a/modelx/core/space.py b/modelx/core/space.py
index 08a518c..73a8267 100644
--- a/modelx/core/space.py
+++ b/modelx/core/space.py
@@ -306,7 +306,8 @@ def __getattr__(self, name):
         if name in self._impl.namespace:
             return self._impl.get_attr(name)
         else:
-            raise AttributeError  # Must return AttributeError for hasattr
+            raise AttributeError(f"Attribute '{name}' is not in space {str(self)}")
+            # Must return AttributeError for hasattr
 
     def __dir__(self):
         return list(self._impl.namespace.interfaces)