diff --git a/test_runner/fixtures/neon_fixtures.py b/test_runner/fixtures/neon_fixtures.py
index 31acb045ae..faa8effe10 100644
--- a/test_runner/fixtures/neon_fixtures.py
+++ b/test_runner/fixtures/neon_fixtures.py
@@ -2458,6 +2458,7 @@ def pg_bin(test_output_dir: Path, pg_distrib_dir: Path, pg_version: PgVersion) -
     return PgBin(test_output_dir, pg_distrib_dir, pg_version)
 
 
+# TODO make port an optional argument
 class VanillaPostgres(PgProtocol):
     def __init__(self, pgdatadir: Path, pg_bin: PgBin, port: int, init: bool = True):
         super().__init__(host="localhost", port=port, dbname="postgres")
diff --git a/test_runner/regress/test_fullbackup.py b/test_runner/regress/test_fullbackup.py
index 9a22084671..d5f898492b 100644
--- a/test_runner/regress/test_fullbackup.py
+++ b/test_runner/regress/test_fullbackup.py
@@ -66,12 +66,6 @@ def test_fullbackup(
     # Restore from the backup and find the data we inserted
     port = port_distributor.get_port()
     with VanillaPostgres(restored_dir_path, pg_bin, port, init=False) as vanilla_pg:
-        # TODO make port an optional argument
-        vanilla_pg.configure(
-            [
-                f"port={port}",
-            ]
-        )
         vanilla_pg.start()
         num_rows_found = vanilla_pg.safe_psql("select count(*) from tbl;", user="cloud_admin")[0][0]
         assert num_rows == num_rows_found
diff --git a/test_runner/regress/test_timeline_size.py b/test_runner/regress/test_timeline_size.py
index a3f99948d3..0788c49c7b 100644
--- a/test_runner/regress/test_timeline_size.py
+++ b/test_runner/regress/test_timeline_size.py
@@ -579,7 +579,6 @@ def test_timeline_size_metrics(
     pg_bin = PgBin(test_output_dir, pg_distrib_dir, pg_version)
     port = port_distributor.get_port()
     with VanillaPostgres(pgdatadir, pg_bin, port) as vanilla_pg:
-        vanilla_pg.configure([f"port={port}"])
         vanilla_pg.start()
 
         # Create database based on template0 because we can't connect to template0