diff --git a/tests/data/regressions/its7573/its7573 b/tests/data/regressions/its7573/its7573
new file mode 100755
index 0000000000..5e5a1119c1
--- /dev/null
+++ b/tests/data/regressions/its7573/its7573
@@ -0,0 +1,121 @@
+#! /bin/sh
+# $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 1998-2020 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+if test $BACKPERL = perlno; then
+	echo "Perl backend not available, test skipped"
+	exit 0
+fi
+
+CONFDIR=$TESTDIR/slapd.d
+PERLPM=$TOPSRCDIR/servers/slapd/back-perl/SampleLDAP.pm
+PERLMOD=SampleLDAP
+
+mkdir -p $TESTDIR $CONFDIR $DBDIR1
+cp $PERLPM $TESTDIR
+
+$SLAPPASSWD -g -n >$CONFIGPWF
+
+echo "Starting slapd on TCP/IP port $PORT1... $PWD"
+. $CONFFILTER $BACKEND $MONITORDB < $DYNAMICCONF > $CONFLDIF
+$SLAPADD -F $CONFDIR -n 0 -l $CONFLDIF
+cd $TESTDIR
+$SLAPD -F ./slapd.d -h $URI1 -d $LVL $TIMING > $LOG1 2>&1 &
+PID=$!
+if test $WAIT != 0 ; then
+    echo PID $PID
+    read foo
+fi
+KILLPIDS="$PID"
+cd $TESTWD
+
+sleep 1
+
+echo "Using ldapsearch to check that slapd is running..."
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "" -H $URI1 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting 5 seconds for slapd to start..."
+	sleep 5
+done
+
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Adding schema..."
+$LDAPADD -H $URI1 -D cn=config -y $CONFIGPWF <<EOF >>$TESTOUT 2>&1
+include: file://$ABS_SCHEMADIR/core.ldif
+
+include: file://$ABS_SCHEMADIR/cosine.ldif
+EOF
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapadd failed for schema config ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+if test $BACKPERL = perlmod; then
+	echo "Loading back-perl module..."
+	$LDAPADD -H $URI1 -D cn=config -y $CONFIGPWF <<EOF >>$TESTOUT 2>&1
+dn: cn=module,cn=config
+objectClass: olcModuleList
+cn: module
+olcModulePath: $TESTWD/../servers/slapd/back-perl
+olcModuleLoad: back_perl.la
+EOF
+	RC=$?
+	if test $RC != 0 ; then
+		echo "ldapadd failed for module config ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit $RC
+	fi
+fi
+
+echo "Adding database..."
+$LDAPADD -H $URI1 -D cn=config -y $CONFIGPWF <<EOF >>$TESTOUT 2>&1
+dn: olcDatabase=perl,cn=config
+objectClass: olcDatabaseConfig
+objectClass: olcDbPerlConfig
+olcDatabase: perl
+olcSuffix: $BASEDN
+olcRootDN: $MANAGERDN
+olcRootPW: $PASSWD
+olcPerlModulePath: $TESTDIR
+olcPerlModule: $PERLMOD
+EOF
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapadd failed for database config ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/tests/run.in b/tests/run.in
index 4458e8e04d..249504051d 100644
--- a/tests/run.in
+++ b/tests/run.in
@@ -33,6 +33,7 @@ AC_ldap=ldap@BUILD_LDAP@
 AC_meta=meta@BUILD_META@
 AC_asyncmeta=asyncmeta@BUILD_ASYNCMETA@
 AC_monitor=@BUILD_MONITOR@
+AC_perl=perl@BUILD_PERL@
 AC_relay=relay@BUILD_RELAY@
 AC_sql=sql@BUILD_SQL@
 
@@ -72,7 +73,7 @@ fi
 if test "${AC_asyncmeta}" = "asyncmetamod" && test "${AC_LIBS_DYNAMIC}" = "static" ; then
 	AC_meta="asyncmetano"
 fi
-export AC_ldap AC_mdb AC_meta AC_asyncmeta AC_monitor AC_null AC_relay AC_sql \
+export AC_ldap AC_mdb AC_meta AC_asyncmeta AC_monitor AC_null AC_perl AC_relay AC_sql \
 	AC_accesslog AC_autoca AC_constraint AC_dds AC_dynlist AC_memberof AC_pcache AC_ppolicy \
 	AC_refint AC_retcode AC_rwm AC_unique AC_syncprov AC_translucent \
 	AC_valsort \
diff --git a/tests/scripts/defines.sh b/tests/scripts/defines.sh
index 08ca80267b..f9e5578ee6 100755
--- a/tests/scripts/defines.sh
+++ b/tests/scripts/defines.sh
@@ -22,6 +22,7 @@ MONITORDB=${AC_monitor-no}
 BACKLDAP=${AC_ldap-ldapno}
 BACKMETA=${AC_meta-metano}
 BACKASYNCMETA=${AC_asyncmeta-asyncmetano}
+BACKPERL=${AC_perl-perlno}
 BACKRELAY=${AC_relay-relayno}
 BACKSQL=${AC_sql-sqlno}
 	RDBMS=${SLAPD_USE_SQL-rdbmsno}