diff --git a/0004-use-correct-dn-value.patch b/0004-use-correct-dn-value.patch
new file mode 100644
index 0000000..fa55c8b
--- /dev/null
+++ b/0004-use-correct-dn-value.patch
@@ -0,0 +1,32 @@
+commit d69150691983f7f1efaa078549cd80a14afb76cb
+Author: Petr Menšík <pemensik@redhat.com>
+Date:   Mon Jan 28 00:31:25 2019 +0100
+
+    Use correct dn value
+    
+    New GCC correctly reports error, NULL is always passed in case of
+    invalid objectclass.
+    
+    Signed-off-by: Petr Menšík <pemensik@redhat.com>
+
+diff --git a/src/ldap_helper.c b/src/ldap_helper.c
+index ac8ce6e..8b486ae 100644
+--- a/src/ldap_helper.c
++++ b/src/ldap_helper.c
+@@ -4102,7 +4102,6 @@ syncrepl_update(ldap_instance_t *inst, ldap_entry_t **entryp, int chgtype)
+ 	ldap_entry_t *entry = NULL;
+ 	dns_name_t *zone_name = NULL;
+ 	dns_zone_t *zone_ptr = NULL;
+-	char *dn = NULL;
+ 	isc_taskaction_t action = NULL;
+ 	isc_task_t *task = NULL;
+ 	isc_boolean_t synchronous;
+@@ -4156,7 +4155,7 @@ syncrepl_update(ldap_instance_t *inst, ldap_entry_t **entryp, int chgtype)
+ 	else if ((entry->class & LDAP_ENTRYCLASS_RR) != 0)
+ 		action = update_record;
+ 	else {
+-		log_error("unsupported objectClass: dn '%s'", dn);
++		log_error("unsupported objectClass: dn '%s'", entry->dn);
+ 		result = ISC_R_NOTIMPLEMENTED;
+ 		goto cleanup;
+ 	}
diff --git a/bind-dyndb-ldap.spec b/bind-dyndb-ldap.spec
index 3e77336..505dbb8 100644
--- a/bind-dyndb-ldap.spec
+++ b/bind-dyndb-ldap.spec
@@ -2,7 +2,7 @@
 
 Name:           bind-dyndb-ldap
 Version:        11.1
-Release:        13
+Release:        14
 Summary:        LDAP back-end plug-in for BIND
 License:        GPLv2+
 URL:            https://releases.pagure.org/bind-dyndb-ldap
@@ -12,6 +12,7 @@ Source1:        https://releases.pagure.org/%{name}/%{name}-%{version}.tar.bz2.a
 Patch0001:      0001-Coverity-fix-REVERSE_INULL-for-pevent-inst.patch
 Patch0002:      0002-Add-empty-callback-for-getsize.patch
 Patch0003:      0003-Support-for-BIND-9.11.3.patch
+Patch0004:      0004-use-correct-dn-value.patch
 BuildRequires:  bind-devel >= %{bind_version}, bind-lite-devel >= %{bind_version}, bind-pkcs11-devel >= %{bind_version}
 BuildRequires:  krb5-devel
 BuildRequires:  openldap-devel
@@ -74,5 +75,11 @@ sed -i.bak -e "$SEDSCRIPT" /etc/named.conf
 
 
 %changelog
+* Mon Jun 22 2020 gaihuiying <gaihuiying1@huawei.com> - 11.1-14
+- Type:bugfix
+- ID:NA
+- SUG:NA
+- DESC:fix build error with gcc9 
+
 * Wed Sep 11 2019 AlexChao <zhaolei746@huawei.com> - 11.1-13
 - Package init