diff --git a/src/Mod/Fem/femtest/app/test_solverframework.py b/src/Mod/Fem/femtest/app/test_solverframework.py
index 9237e99eac..c4e7f207d7 100644
--- a/src/Mod/Fem/femtest/app/test_solverframework.py
+++ b/src/Mod/Fem/femtest/app/test_solverframework.py
@@ -55,10 +55,23 @@ class TestSolverFrameWork(unittest.TestCase):
             "FEM_solverframework"
         )
 
+        # make sure std FreeCAD unit system mm/kg/s is used
+        param = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Units")
+        self.unit_schema = param.GetInt("UserSchema")
+        if self.unit_schema != 0:
+            fcc_print("Unit schema: {}. Set unit schema to 0 (mm/kg/s)".format(self.unit_schema))
+            param.SetInt("UserSchema", 0)
+
     # ********************************************************************************************
     def tearDown(
         self
     ):
+        # set back unit unit schema
+        if self.unit_schema != 0:
+            fcc_print("Set unit schema back to {}".format(self.unit_schema))
+            param = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Units")
+            param.SetInt("UserSchema", self.unit_schema)
+
         # tearDown is executed after every test
         FreeCAD.closeDocument(self.document.Name)