diff --git a/rsconcept/backend/apps/rsform/models/api_RSForm.py b/rsconcept/backend/apps/rsform/models/api_RSForm.py
index 957e8bf1..76dfb4ff 100644
--- a/rsconcept/backend/apps/rsform/models/api_RSForm.py
+++ b/rsconcept/backend/apps/rsform/models/api_RSForm.py
@@ -77,7 +77,7 @@ class RSForm:
 
     def get_max_index(self, cst_type: CstType) -> int:
         ''' Get maximum alias index for specific CstType '''
-        result: int = 1
+        result: int = 0
         items = Constituenta.objects \
             .filter(schema=self.item, cst_type=cst_type) \
             .order_by('-alias') \
diff --git a/rsconcept/backend/apps/rsform/tests/t_models.py b/rsconcept/backend/apps/rsform/tests/t_models.py
index e77218f1..7b852e23 100644
--- a/rsconcept/backend/apps/rsform/tests/t_models.py
+++ b/rsconcept/backend/apps/rsform/tests/t_models.py
@@ -160,6 +160,14 @@ class TestRSForm(TestCase):
         self.assertFalse(schema2.constituents().exists())
         self.assertEqual(schema1.constituents().count(), 2)
 
+    def test_get_max_index(self):
+        schema1 = RSForm.create(title='Test1')
+        Constituenta.objects.create(alias='X1', schema=schema1.item, order=1)
+        Constituenta.objects.create(alias='D2', cst_type=CstType.TERM, schema=schema1.item, order=2)
+        self.assertEqual(schema1.get_max_index(CstType.BASE), 1)
+        self.assertEqual(schema1.get_max_index(CstType.TERM), 2)
+        self.assertEqual(schema1.get_max_index(CstType.AXIOM), 0)
+
     def test_insert_at(self):
         schema = RSForm.create(title='Test')
         cst1 = schema.insert_at(1, 'X1', CstType.BASE)