diff --git a/src/covid19/blueprints/common/common_model.py b/src/covid19/blueprints/common/common_model.py
index f877c80123835230beb2436eadef7ff572b6a431..7420fa7fea56e3e165482b187f4d6d40f5de04ec 100644
--- a/src/covid19/blueprints/common/common_model.py
+++ b/src/covid19/blueprints/common/common_model.py
@@ -72,7 +72,7 @@ class CommonDateReported(db.Model):
     @classmethod
     def remove_all(cls):
         for one in cls.get_all():
-            db.session.delete(one).cascade()
+            db.session.delete(one)
         db.session.commit()
         return None
 
@@ -140,7 +140,7 @@ class CommonRegion(db.Model):
     @classmethod
     def remove_all(cls):
         for one in cls.get_all():
-            db.session.delete(one).cascade()
+            db.session.delete(one)
         db.session.commit()
         return None
 
diff --git a/src/covid19/blueprints/europe/europe_model_import.py b/src/covid19/blueprints/europe/europe_model_import.py
index 968fa59beb2bca7a3f71dd6b137fcd38299b8386..74fc93e737e24e9161b7b7703793ae1bb9c9d74f 100644
--- a/src/covid19/blueprints/europe/europe_model_import.py
+++ b/src/covid19/blueprints/europe/europe_model_import.py
@@ -19,7 +19,7 @@ class EuropeDataImportTable(db.Model):
     @classmethod
     def remove_all(cls):
         for one in cls.get_all():
-            db.session.delete(one).cascade()
+            db.session.delete(one)
         db.session.commit()
         return None