diff --git a/src/bin/pg_ctl/t/001_start_stop.pl b/src/bin/pg_ctl/t/001_start_stop.pl
index 3b45390ced7..fdffd76d991 100644
--- a/src/bin/pg_ctl/t/001_start_stop.pl
+++ b/src/bin/pg_ctl/t/001_start_stop.pl
@@ -4,9 +4,6 @@
 use strict;
 use warnings;
 
-use Config;
-use Fcntl ':mode';
-use File::stat qw{lstat};
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 use Test::More;
diff --git a/src/bin/pg_rewind/t/RewindTest.pm b/src/bin/pg_rewind/t/RewindTest.pm
index 5651602858a..1e34768e270 100644
--- a/src/bin/pg_rewind/t/RewindTest.pm
+++ b/src/bin/pg_rewind/t/RewindTest.pm
@@ -35,7 +35,6 @@ use strict;
 use warnings;
 
 use Carp;
-use Config;
 use Exporter 'import';
 use File::Copy;
 use File::Path qw(rmtree);
diff --git a/src/test/ldap/t/001_auth.pl b/src/test/ldap/t/001_auth.pl
index 9f15248935a..b342146e556 100644
--- a/src/test/ldap/t/001_auth.pl
+++ b/src/test/ldap/t/001_auth.pl
@@ -6,7 +6,6 @@ use warnings;
 use PostgreSQL::Test::Utils;
 use PostgreSQL::Test::Cluster;
 use Test::More;
-use Config;
 
 
 my ($slapd, $ldap_bin_dir, $ldap_schema_dir);