diff --git a/tests/bugs/core_4447_test.py b/tests/bugs/core_4447_test.py
index e3d8091e..b5166f69 100644
--- a/tests/bugs/core_4447_test.py
+++ b/tests/bugs/core_4447_test.py
@@ -43,7 +43,7 @@ test_script = """
   set planonly;
 """
 
-act = isql_act('db', test_script)
+act = isql_act('db', test_script, substitutions = [('(--\\s+)?line \\d+, col(umn)? \\d+', '')])
 
 expected_stdout = """
   PLAN (T INDEX (TT_PK_XY))