diff --git a/legacy/migration.py b/legacy/migration.py
index caf777825..a930012dc 100644
--- a/legacy/migration.py
+++ b/legacy/migration.py
@@ -1,4 +1,3 @@
-
 import re
 
 import pkg_resources
@@ -71,9 +70,8 @@ def get_renames():
             field_renames[model] = renames
 
     # remove abstract classes
-    for model in field_renames:
-        if model._meta.abstract:
-            del field_renames[model]
+    field_renames = {m: r for m, r in field_renames.items()
+                     if not m._meta.abstract}
 
     return field_renames, model_renames
 
diff --git a/legacy/test_migration.py b/legacy/test_migration.py
new file mode 100644
index 000000000..e2de9cf2c
--- /dev/null
+++ b/legacy/test_migration.py
@@ -0,0 +1,37 @@
+import comissoes
+import materia
+from .migration import appconfs, get_renames, legacy_app
+
+
+RENAMING_IGNORED_MODELS = [
+    comissoes.models.Composicao,
+]
+
+RENAMING_IGNORED_FIELDS = [
+    (materia.models.Proposicao, {'documento'}),
+    (materia.models.TipoProposicao, {'tipo_documento'}),
+]
+
+
+def test_get_renames():
+    field_renames, model_renames = get_renames()
+    all_models = {m for ac in appconfs for m in ac.get_models()}
+    for model in all_models:
+        field_names = {f.name for f in model._meta.fields if f.name != 'id'}
+        if model not in field_renames:
+            # check ignored models in renaming
+            assert model in RENAMING_IGNORED_MODELS
+        else:
+            renamed = set(field_renames[model].keys())
+
+            # all renamed field references correspond to an actual field
+            assert renamed <= field_names
+
+            # check ignored fields in renaming
+            missing_in_renames = field_names - renamed
+            if missing_in_renames:
+                assert (model, missing_in_renames) in RENAMING_IGNORED_FIELDS
+
+            # all old names correspond to a legacy model field
+            legacy_model = legacy_app.get_model(model_renames.get(model, model.__name__))
+            assert set(field_renames[model].values()) <= {f.name for f in legacy_model._meta.fields}