diff --git a/python/damask/_geom.py b/python/damask/_geom.py
index 7185f0963..07d3a73a9 100644
--- a/python/damask/_geom.py
+++ b/python/damask/_geom.py
@@ -112,24 +112,24 @@ class Geom:
         """
         message = []
         if np.any(other.get_grid() != self.get_grid()):
-            message.append(util.delete(f'grid     a b c:      {util.srepr(other.get_grid()," x ")}'))
-            message.append(util.emph(  f'grid     a b c:      {util.srepr( self.get_grid()," x ")}'))
+            message.append(util.delete(f'grid     a b c:     {util.srepr(other.get_grid()," x ")}'))
+            message.append(util.emph(  f'grid     a b c:     {util.srepr( self.get_grid()," x ")}'))
 
         if np.any(other.get_size() != self.get_size()):
-            message.append(util.delete(f'size     x y z:      {util.srepr(other.get_size()," x ")}'))
-            message.append(util.emph(  f'size     x y z:      {util.srepr( self.get_size()," x ")}'))
+            message.append(util.delete(f'size     x y z:     {util.srepr(other.get_size()," x ")}'))
+            message.append(util.emph(  f'size     x y z:     {util.srepr( self.get_size()," x ")}'))
 
         if np.any(other.get_origin() != self.get_origin()):
-            message.append(util.delete(f'origin   x y z:      {util.srepr(other.get_origin(),"   ")}'))
-            message.append(util.emph(  f'origin   x y z:      {util.srepr( self.get_origin(),"   ")}'))
+            message.append(util.delete(f'origin   x y z:     {util.srepr(other.get_origin(),"   ")}'))
+            message.append(util.emph(  f'origin   x y z:     {util.srepr( self.get_origin(),"   ")}'))
 
         if other.N_microstructure != self.N_microstructure:
-            message.append(util.delete(f'# microstructures:   {other.N_microstructure}'))
-            message.append(util.emph(  f'# microstructures:   { self.N_microstructure}'))
+            message.append(util.delete(f'# materialpoints:   {other.N_microstructure}'))
+            message.append(util.emph(  f'# materialpoints:   { self.N_microstructure}'))
 
         if np.nanmax(other.microstructure) != np.nanmax(self.microstructure):
-            message.append(util.delete(f'max microstructure:  {np.nanmax(other.microstructure)}'))
-            message.append(util.emph(  f'max microstructure:  {np.nanmax( self.microstructure)}'))
+            message.append(util.delete(f'max materialpoint:  {np.nanmax(other.microstructure)}'))
+            message.append(util.emph(  f'max materialpoint:  {np.nanmax( self.microstructure)}'))
 
         return util.return_message(message)
 
diff --git a/python/tests/test_Geom.py b/python/tests/test_Geom.py
index 4fe07fe54..4b7f05f91 100644
--- a/python/tests/test_Geom.py
+++ b/python/tests/test_Geom.py
@@ -13,7 +13,8 @@ from damask import util
 def geom_equal(a,b):
     return np.all(a.get_microstructure() == b.get_microstructure()) and \
            np.all(a.get_grid()           == b.get_grid()) and \
-           np.allclose(a.get_size(), b.get_size())
+           np.allclose(a.get_size(), b.get_size()) and \
+           str(a.diff(b)) == str(b.diff(a))
 
 @pytest.fixture
 def default():
@@ -45,6 +46,13 @@ class TestGeom:
         print(modified)
         assert geom_equal(default,modified)
 
+    def test_diff_equal(self,default):
+        assert str(default.diff(default)) == ''
+
+    def test_diff_not_equal(self,default):
+        new = Geom(default.microstructure[1:,1:,1:]+1,default.size*.9,np.ones(3)-default.origin,comments=['modified'])
+        assert str(default.diff(new)) != ''
+
 
     @pytest.mark.parametrize('masked',[True,False])
     def test_set_microstructure(self,default,masked):
@@ -55,8 +63,8 @@ class TestGeom:
 
 
     def test_write_read_str(self,default,tmpdir):
-        default.to_file(tmpdir/'default.geom')
-        new = Geom.from_file(tmpdir/'default.geom')
+        default.to_file(str(tmpdir/'default.geom'))
+        new = Geom.from_file(str(tmpdir/'default.geom'))
         assert geom_equal(default,new)
 
     def test_write_read_file(self,default,tmpdir):
@@ -139,6 +147,12 @@ class TestGeom:
         assert geom_equal(Geom.from_file(reference),
                           modified)
 
+    @pytest.mark.parametrize('directions',[(1,2,'y'),('a','b','x'),[1]])
+    def test_mirror_invalid(self,default,directions):
+        with pytest.raises(ValueError):
+            default.mirror(directions)
+
+
     @pytest.mark.parametrize('directions',[
                                            ['x'],
                                            ['x','y','z'],
@@ -155,9 +169,10 @@ class TestGeom:
                           modified)
 
     @pytest.mark.parametrize('directions',[(1,2,'y'),('a','b','x'),[1]])
-    def test_mirror_invalid(self,default,directions):
+    def test_flip_invalid(self,default,directions):
         with pytest.raises(ValueError):
-            default.mirror(directions)
+            default.flip(directions)
+
 
     @pytest.mark.parametrize('stencil',[1,2,3,4])
     @pytest.mark.parametrize('selection',[None,[1],[1,2,3]])