diff --git a/tests/bugs/core_4212_test.py b/tests/bugs/core_4212_test.py
index 112e59e8..4a479cd9 100644
--- a/tests/bugs/core_4212_test.py
+++ b/tests/bugs/core_4212_test.py
@@ -7,34 +7,40 @@ TITLE:       Dropping FK on GTT crashes server
 DESCRIPTION:
 JIRA:        CORE-4212
 FBTEST:      bugs.core_4212
+NOTES:
+    [05.10.2023] pzotov
+    Confirmed crash on 3.0.0.30566 Alpha1.
+    Removed SHOW command. It is enough for this test just to try to insert record in the 'T2' table after dropping FK.
 """
 
 import pytest
 from firebird.qa import *
 
-db = db_factory(from_backup='core4212.fbk')
+db = db_factory(charset = 'win1251')
 
 test_script = """
---  'database': 'Existing',
---  'database_name': 'core4212-25.fdb',
-
-    set autoddl off;
+    set list on;
+    create global temporary table t1 (text_id varchar(8) not null primary key);
+    create global temporary table t2 (text_id varchar(8));
+    alter table t2 add constraint t2_fk foreign key (text_id) references t1 (text_id);
     commit;
+
+    connect '$(DSN)';
+
     alter table t2 drop constraint t2_fk;
-    rollback;
-    show table t2;
+    commit;
+    insert into t2(text_id) values('qwerty');
+    select * from t2;
 """
 
-act = isql_act('db', test_script)
+act = isql_act('db', test_script, substitutions = [ ('[ \t]+', ''), ] )
 
 expected_stdout = """
-    ID                              VARCHAR(8) Nullable
-    CONSTRAINT T2_FK:
-      Foreign key (ID)    References T1 (ID)
+    TEXT_ID qwerty
 """
 
 @pytest.mark.version('>=3')
 def test_1(act: Action):
     act.expected_stdout = expected_stdout
-    act.execute()
+    act.execute(combine_output = True)
     assert act.clean_stdout == act.clean_expected_stdout