diff --git a/src/Mod/Fem/femsolver/calculix/tasks.py b/src/Mod/Fem/femsolver/calculix/tasks.py
index 224312fc7f..c1deea322a 100644
--- a/src/Mod/Fem/femsolver/calculix/tasks.py
+++ b/src/Mod/Fem/femsolver/calculix/tasks.py
@@ -64,7 +64,7 @@ class Prepare(run.Prepare):
         w = writer.FemInputWriterCcx(
             self.analysis,
             self.solver,
-            c.mesh,
+            femutils.get_mesh_to_solve(self.analysis)[0],  # pre check hast been done already
             c.materials_linear,
             c.materials_nonlinear,
             c.constraints_fixed,
@@ -170,19 +170,6 @@ class _Container(object):
     def __init__(self, analysis):
         self.analysis = analysis
 
-        # get mesh
-        mesh, message = femutils.get_mesh_to_solve(self.analysis)
-        if mesh is not None:
-            self.mesh = mesh
-        else:
-            if FreeCAD.GuiUp:
-                QtGui.QMessageBox.critical(
-                    None,
-                    "Missing prerequisite",
-                    message
-                )
-            raise Exception(message + "\n")
-
         # get member
         # materials
         std_mats = self.get_several_member(
diff --git a/src/Mod/Fem/femsolver/z88/tasks.py b/src/Mod/Fem/femsolver/z88/tasks.py
index ec89842ffc..5017056e36 100644
--- a/src/Mod/Fem/femsolver/z88/tasks.py
+++ b/src/Mod/Fem/femsolver/z88/tasks.py
@@ -58,7 +58,7 @@ class Prepare(run.Prepare):
         w = writer.FemInputWriterZ88(
             self.analysis,
             self.solver,
-            c.mesh,
+            femutils.get_mesh_to_solve(self.analysis)[0],  # pre check hast been done already
             c.materials_linear,
             c.materials_nonlinear,
             c.constraints_fixed,
@@ -155,19 +155,6 @@ class _Container(object):
     def __init__(self, analysis):
         self.analysis = analysis
 
-        # get mesh
-        mesh, message = femutils.get_mesh_to_solve(self.analysis)
-        if mesh is not None:
-            self.mesh = mesh
-        else:
-            if FreeCAD.GuiUp:
-                QtGui.QMessageBox.critical(
-                    None,
-                    "Missing prerequisite",
-                    message
-                )
-            raise Exception(message + "\n")
-
         # get member, empty lists are not supported by z88
         # materials
         self.materials_linear = self.get_several_member(