diff --git a/flask_security/datastore.py b/flask_security/datastore.py
index 029bf09..04c3315 100644
--- a/flask_security/datastore.py
+++ b/flask_security/datastore.py
@@ -291,8 +291,9 @@ class PeeweeUserDatastore(PeeweeDatastore, UserDatastore):
         result = self.UserRole.select() \
             .where(self.UserRole.user == user, self.UserRole.role == role)
         if result.count():
-            self.UserRole.delete().where(
+            query = self.UserRole.delete().where(
                 self.UserRole.user == user, self.UserRole.role == role)
+            query.execute()
             return True
         else:
             return False