diff --git a/tests/functional/trigger/table/test_alter_07.py b/tests/functional/trigger/table/test_alter_07.py
index 9e379e80..0ce47e04 100644
--- a/tests/functional/trigger/table/test_alter_07.py
+++ b/tests/functional/trigger/table/test_alter_07.py
@@ -2,8 +2,8 @@
 
 """
 ID:          trigger.table.alter-07
-TITLE:       ALTER TRIGGER - AFTER INSERT
-DESCRIPTION:
+TITLE:       ALTER TRIGGER: attempt to use "new" in AFTER INSERT
+DESCRIPTION: an attempt to change the trigger event to 'AFTER' should be rejected if trigger uses 'new' context variable.
 FBTEST:      functional.trigger.table.alter_07
 """
 
@@ -11,71 +11,54 @@ import pytest
 from firebird.qa import *
 
 init_script = """
-    CREATE TABLE test( id INTEGER NOT NULL CONSTRAINT unq UNIQUE, text VARCHAR(32));
-    SET TERM ^;
-    CREATE TRIGGER tg FOR test BEFORE UPDATE
-    AS
-    BEGIN
-      new.id=1;
-    END ^
-    SET TERM ;^
+    create table test( id int primary key);
+    set term ^;
+    create trigger trg_test_bu for test before update as
+    begin
+        new.id=1;
+    end ^
+    set term ;^
     commit;
 """
 
 db = db_factory(init=init_script)
 
 test_script = """
-    ALTER TRIGGER tg AFTER INSERT;
-    SHOW TRIGGER tg;
+    ALTER TRIGGER trg_test_bu AFTER INSERT;
 """
 
-act = isql_act('db', test_script, substitutions=[('\\+.*',''),('\\=.*',''),('Trigger text.*',''), ('-attempted', 'attempted'), ('-ID',''), ('Error while parsing trigger TG\'s BLR', '')])
+# FB 3.x:
+#     Statement failed, SQLSTATE = 42000
+#     attempted update of read-only column
+# FB 4.x and 5.x:
+#     Statement failed, SQLSTATE = 42000
+#     attempted update of read-only column TEST.ID
+
+substitutions = [
+                  ('^((?!SQLSTATE|column).)*$', '')
+                  ,('-attempted', 'attempted')
+                ]
+
+act = isql_act('db', test_script, substitutions = substitutions)
 
-expected_stdout_fb3 = """
-    Triggers on Table TEST:
-    =============================================================================
-    TG, Sequence: 0, Type: BEFORE UPDATE, Active
-    Trigger text:
-    =============================================================================
-    AS
-    BEGIN
-    new.id=1;
-    END
-    =============================================================================
-"""
 
 expected_stderr_fb3 = """    	
-    Statement failed, SQLSTATE = 2F000
-    Error while parsing trigger TG's BLR
-    -attempted update of read-only column
-    -ID
-"""
-
-expected_stdout_fb4 =  """
-    Triggers on Table TEST:
-    TG, Sequence: 0, Type: BEFORE UPDATE, Active
-    AS
-    BEGIN
-        new.id=1;
-    END
+    Statement failed, SQLSTATE = 42000
+    attempted update of read-only column
 """
 
 expected_stderr_fb4 = """
-    Statement failed, SQLSTATE
-    Error while parsing trigger TG's BLR
-    -attempted update of read-only column TEST.ID
+    Statement failed, SQLSTATE = 42000
+    attempted update of read-only column TEST.ID
 """
 
 @pytest.mark.version('>=3.0')
 def test_1(act: Action):
     if act.is_version('>=4.0'):
         act.expected_stderr = expected_stderr_fb4
-        act.expected_stdout = expected_stdout_fb4
     else:
         act.expected_stderr = expected_stderr_fb3
-        act.expected_stdout = expected_stdout_fb3
     
     act.execute()
     
-    assert act.clean_stdout == act.clean_expected_stdout
-    assert act.clean_stderr == act.clean_expected_stderr
\ No newline at end of file
+    assert act.clean_stderr == act.clean_expected_stderr