diff --git a/src/ansys/fluent/core/solver/flobject.py b/src/ansys/fluent/core/solver/flobject.py
index 151d5ea82b40..c5e009630fec 100644
--- a/src/ansys/fluent/core/solver/flobject.py
+++ b/src/ansys/fluent/core/solver/flobject.py
@@ -470,7 +470,7 @@ def _get_parent_of_active_child_names(self, name):
 
     def __getattribute__(self, name):
         if name in super().__getattribute__("child_names"):
-            if not self.is_active():
+            if self.is_active() is False:
                 raise RuntimeError(f"'{self.path}' is currently not active")
         try:
             return super().__getattribute__(name)