diff --git a/tests/bugs/gh_7178_test.py b/tests/bugs/gh_7178_test.py
new file mode 100644
index 00000000..ef10266b
--- /dev/null
+++ b/tests/bugs/gh_7178_test.py
@@ -0,0 +1,45 @@
+#coding:utf-8
+
+"""
+ID:          issue-7178
+ISSUE:       7178
+TITLE:       DEFAULTed grants to PUBLIC must act as DEFAULTed to every user
+NOTES:
+    [21.02.2023] pzotov
+    Confirmed problem on 5.0.0.494: role was not default when checked via RDB$ROLE_IN_USE()
+    Checked on 5.0.0.958
+"""
+
+import pytest
+from firebird.qa import *
+
+db = db_factory()
+tmp_user = user_factory('db', name = 'tmp_user_7178', password = '123')
+tmp_role = role_factory('db', name = 'tmp_role_7178')
+act = python_act('db')
+
+@pytest.mark.version('>=5.0')
+def test_1(act: Action, tmp_user: User, tmp_role: Role):
+
+    test_script = f"""
+        set list on;
+
+        grant default {tmp_role.name} to public;
+        commit;
+
+        connect '{act.db.dsn}' user {tmp_user.name} password '{tmp_user.password}';
+
+        select current_user as who_am_i,cast(r.rdb$role_name as varchar(31)) as role_name, rdb$role_in_use(r.rdb$role_name) role_in_use
+        from rdb$roles r
+        where r.rdb$role_name = upper('{tmp_role.name}');
+    """
+
+    expected_stdout = f"""
+        WHO_AM_I                        {tmp_user.name.upper()}
+        ROLE_NAME                       {tmp_role.name.upper()}
+        ROLE_IN_USE                     <true>
+    """
+    
+    act.expected_stdout = expected_stdout
+    act.isql(switches=['-q'], input = test_script, combine_output=True)
+    assert act.clean_stdout == act.clean_expected_stdout