diff --git a/src/test/regress/bin/normalize.sed b/src/test/regress/bin/normalize.sed
index 1fd661817..dab476d51 100644
--- a/src/test/regress/bin/normalize.sed
+++ b/src/test/regress/bin/normalize.sed
@@ -56,9 +56,9 @@ s/ERROR:  failed to execute task [0-9]+/ERROR:  failed to execute task X/g
 # normalize file names for partitioned files
 s/(task_[0-9]+\.)[0-9]+/\1xxxx/g
 s/(job_[0-9]+\/task_[0-9]+\/p_[0-9]+\.)[0-9]+/\1xxxx/g
-#
-## isolation_ref2ref_foreign_keys
-#s/"(ref_table_[0-9]_|ref_table_[0-9]_value_fkey_)[0-9]+"/"\1xxxxxxx"/g
+
+# isolation_ref2ref_foreign_keys
+s/"(ref_table_[0-9]_|ref_table_[0-9]_value_fkey_)[0-9]+"/"\1xxxxxxx"/g
 #
 ## Line info varies between versions
 #/^LINE [0-9]+:.*$/d
diff --git a/src/test/regress/expected/isolation_ref2ref_foreign_keys.out b/src/test/regress/expected/isolation_ref2ref_foreign_keys.out
index b59241288..7d210d33e 100644
--- a/src/test/regress/expected/isolation_ref2ref_foreign_keys.out
+++ b/src/test/regress/expected/isolation_ref2ref_foreign_keys.out
@@ -411,7 +411,7 @@ step s2-commit:
     COMMIT;
 
 step s1-insert-table-2: <... completed>
-error in steps s2-commit s1-insert-table-2: ERROR:  insert or update on table "ref_table_2_102048" violates foreign key constraint "ref_table_2_value_fkey_102048"
+error in steps s2-commit s1-insert-table-2: ERROR:  insert or update on table "ref_table_2_xxxxxxx" violates foreign key constraint "ref_table_2_value_fkey_xxxxxxx"
 step s1-commit: 
     COMMIT;
 
@@ -498,7 +498,7 @@ step s2-commit:
     COMMIT;
 
 step s1-insert-table-3: <... completed>
-error in steps s2-commit s1-insert-table-3: ERROR:  insert or update on table "ref_table_3_102058" violates foreign key constraint "ref_table_3_value_fkey_102058"
+error in steps s2-commit s1-insert-table-3: ERROR:  insert or update on table "ref_table_3_xxxxxxx" violates foreign key constraint "ref_table_3_value_fkey_xxxxxxx"
 step s1-commit: 
     COMMIT;