diff --git a/src/Mod/Fem/femsolver/calculix/tasks.py b/src/Mod/Fem/femsolver/calculix/tasks.py
index e82e39289a..963b76e680 100644
--- a/src/Mod/Fem/femsolver/calculix/tasks.py
+++ b/src/Mod/Fem/femsolver/calculix/tasks.py
@@ -115,7 +115,7 @@ class Results(run.Results):
 
     def purge_results(self):
         for m in membertools.get_member(self.analysis, "Fem::FemResultObject"):
-            if femutils.is_of_type(m.Mesh, "Fem::MeshResult"):
+            if m.Mesh and femutils.is_of_type(m.Mesh, "Fem::MeshResult"):
                 self.analysis.Document.removeObject(m.Mesh.Name)
             self.analysis.Document.removeObject(m.Name)
         self.analysis.Document.recompute()