diff --git a/interface/web/dns/lib/lang/ar_dns_slave.lng b/interface/web/dns/lib/lang/ar_dns_slave.lng
index 416e3d6e722ccae2c29e3da6707d1d36eb4155b0..9e8aaa17f910bee7a6c04008ad844c294689e8ff 100644
--- a/interface/web/dns/lib/lang/ar_dns_slave.lng
+++ b/interface/web/dns/lib/lang/ar_dns_slave.lng
@@ -9,7 +9,7 @@ $wb['xfer_txt'] = 'Allow zone transfers to <br />these IPs (comma separated list
 $wb['server_id_error_empty'] = 'No server selected';
 $wb['origin_error_empty'] = 'Zone empty.';
 $wb['origin_error_unique'] = 'There is already a record for this zone.';
-$wb['origin_error_regex'] = 'Zone has a invalid format.';
+$wb['origin_error_regex'] = 'Zone has an invalid format.';
 $wb['ns_error_regex'] = 'NS has a invalid format.';
 $wb['eg_domain_tld'] = 'e.g. domain.tld.';
 $wb['ipv4_form_txt'] = 'Separate multiple IPs with commas';
diff --git a/interface/web/dns/lib/lang/ar_dns_soa.lng b/interface/web/dns/lib/lang/ar_dns_soa.lng
index 4333c3793aa1c144ce4f9da6a0d823700b6e1fa2..ae2e0221956eeed23234f86bb72ad22e4c9abfef 100644
--- a/interface/web/dns/lib/lang/ar_dns_soa.lng
+++ b/interface/web/dns/lib/lang/ar_dns_soa.lng
@@ -17,7 +17,7 @@ $wb['no_zone_perm'] = 'You do not have the permission to add a record to this DN
 $wb['server_id_error_empty'] = 'No server selected';
 $wb['origin_error_empty'] = 'Zone empty.';
 $wb['origin_error_unique'] = 'There is already a record for this zone.';
-$wb['origin_error_regex'] = 'Zone has a invalid format.';
+$wb['origin_error_regex'] = 'Zone has an invalid format.';
 $wb['ns_error_regex'] = 'NS has a invalid format.';
 $wb['mbox_error_empty'] = 'Email is empty.';
 $wb['mbox_error_regex'] = 'Email format invalid.';
diff --git a/interface/web/dns/lib/lang/bg_dns_soa.lng b/interface/web/dns/lib/lang/bg_dns_soa.lng
index c1e57edf8b9ffa60b9e6f7ae306a1ebeae2184d7..9e75200a6367a0043e055a1c8b7453d021ed9d90 100644
--- a/interface/web/dns/lib/lang/bg_dns_soa.lng
+++ b/interface/web/dns/lib/lang/bg_dns_soa.lng
@@ -17,7 +17,7 @@ $wb['no_zone_perm'] = 'Вие намате права да добавяте за
 $wb['server_id_error_empty'] = 'Няма избран сървър';
 $wb['origin_error_empty'] = 'Зоната е празна.';
 $wb['origin_error_unique'] = 'Вече има такъв запис в тази зона.';
-$wb['origin_error_regex'] = 'Zone has a invalid format.';
+$wb['origin_error_regex'] = 'Zone has an invalid format.';
 $wb['ns_error_regex'] = 'NS запис ае в грешен формат.';
 $wb['mbox_error_empty'] = 'Полето с емайл е празно.';
 $wb['mbox_error_regex'] = 'Полето е емайл е в грешен формат.';
diff --git a/interface/web/dns/lib/lang/en_dns_slave.lng b/interface/web/dns/lib/lang/en_dns_slave.lng
index 4de10b2769b14d9c8c9314ebb876d4f2e1f9a3fd..3cc0aec72c4b0056f1b63d88ee10cc645ab7a491 100644
--- a/interface/web/dns/lib/lang/en_dns_slave.lng
+++ b/interface/web/dns/lib/lang/en_dns_slave.lng
@@ -10,7 +10,7 @@ $wb['xfer_txt'] = 'Allow zone transfers to <br />these IPs (comma separated list
 $wb['server_id_error_empty'] = 'No server selected';
 $wb['origin_error_empty'] = 'Zone empty.';
 $wb['origin_error_unique'] = 'There is already a record for this zone.';
-$wb['origin_error_regex'] = 'Zone has a invalid format.';
+$wb['origin_error_regex'] = 'Zone has an invalid format.';
 $wb['ns_error_regex'] = 'NS has a invalid format.';
 $wb['eg_domain_tld'] = 'e.g. domain.tld.';
 $wb['ipv4_form_txt'] = 'Separate multiple IPs with commas';
diff --git a/interface/web/dns/lib/lang/en_dns_soa.lng b/interface/web/dns/lib/lang/en_dns_soa.lng
index a5f1adfae5cc688659c98937fcb3c7c6947fa51d..95a007fcd672a42806bbe52a5680607fed440771 100644
--- a/interface/web/dns/lib/lang/en_dns_soa.lng
+++ b/interface/web/dns/lib/lang/en_dns_soa.lng
@@ -20,7 +20,7 @@ $wb['no_zone_perm'] = 'You do not have the permission to add a record to this DN
 $wb['server_id_error_empty'] = 'No server selected';
 $wb['origin_error_empty'] = 'Zone empty.';
 $wb['origin_error_unique'] = 'There is already a record for this zone.';
-$wb['origin_error_regex'] = 'Zone has a invalid format.';
+$wb['origin_error_regex'] = 'Zone has an invalid format.';
 $wb['ns_error_regex'] = 'NS has a invalid format.';
 $wb['mbox_error_empty'] = 'Email is empty.';
 $wb['mbox_error_regex'] = 'Email format invalid.';
diff --git a/interface/web/dns/lib/lang/fi_dns_slave.lng b/interface/web/dns/lib/lang/fi_dns_slave.lng
index 416e3d6e722ccae2c29e3da6707d1d36eb4155b0..9e8aaa17f910bee7a6c04008ad844c294689e8ff 100644
--- a/interface/web/dns/lib/lang/fi_dns_slave.lng
+++ b/interface/web/dns/lib/lang/fi_dns_slave.lng
@@ -9,7 +9,7 @@ $wb['xfer_txt'] = 'Allow zone transfers to <br />these IPs (comma separated list
 $wb['server_id_error_empty'] = 'No server selected';
 $wb['origin_error_empty'] = 'Zone empty.';
 $wb['origin_error_unique'] = 'There is already a record for this zone.';
-$wb['origin_error_regex'] = 'Zone has a invalid format.';
+$wb['origin_error_regex'] = 'Zone has an invalid format.';
 $wb['ns_error_regex'] = 'NS has a invalid format.';
 $wb['eg_domain_tld'] = 'e.g. domain.tld.';
 $wb['ipv4_form_txt'] = 'Separate multiple IPs with commas';
diff --git a/interface/web/dns/lib/lang/hu_dns_slave.lng b/interface/web/dns/lib/lang/hu_dns_slave.lng
index 7bc27e3a51092a82de02096c4dd3d82551ad2763..64174c0fc2d3ab5302300793e70ac84d7daeeb2e 100644
--- a/interface/web/dns/lib/lang/hu_dns_slave.lng
+++ b/interface/web/dns/lib/lang/hu_dns_slave.lng
@@ -9,7 +9,7 @@ $wb['xfer_txt'] = 'Allow zone transfers to <br />these IPs (comma separated list
 $wb['server_id_error_empty'] = 'No server selected';
 $wb['origin_error_empty'] = 'Zone empty.';
 $wb['origin_error_unique'] = 'There is already a record for this zone.';
-$wb['origin_error_regex'] = 'Zone has a invalid format.';
+$wb['origin_error_regex'] = 'Zone has an invalid format.';
 $wb['ns_error_regex'] = 'NS has a invalid format.';
 $wb['eg_domain_tld'] = 'e.g. domain.tld.';
 $wb['ipv4_form_txt'] = 'Separate multiple IPs with commas';
diff --git a/interface/web/dns/lib/lang/hu_dns_soa.lng b/interface/web/dns/lib/lang/hu_dns_soa.lng
index fdabdd99c295582fdd02d1400400ab3fbd872dd9..81c730de764b73b63deae73e24a3b6d9652e71b8 100644
--- a/interface/web/dns/lib/lang/hu_dns_soa.lng
+++ b/interface/web/dns/lib/lang/hu_dns_soa.lng
@@ -17,7 +17,7 @@ $wb['no_zone_perm'] = 'You do not have the permission to add a record to this DN
 $wb['server_id_error_empty'] = 'No server selected';
 $wb['origin_error_empty'] = 'Zone empty.';
 $wb['origin_error_unique'] = 'There is already a record for this zone.';
-$wb['origin_error_regex'] = 'Zone has a invalid format.';
+$wb['origin_error_regex'] = 'Zone has an invalid format.';
 $wb['ns_error_regex'] = 'NS has a invalid format.';
 $wb['mbox_error_empty'] = 'Email is empty.';
 $wb['mbox_error_regex'] = 'Email format invalid.';
diff --git a/interface/web/dns/lib/lang/ja_dns_slave.lng b/interface/web/dns/lib/lang/ja_dns_slave.lng
index 416e3d6e722ccae2c29e3da6707d1d36eb4155b0..9e8aaa17f910bee7a6c04008ad844c294689e8ff 100644
--- a/interface/web/dns/lib/lang/ja_dns_slave.lng
+++ b/interface/web/dns/lib/lang/ja_dns_slave.lng
@@ -9,7 +9,7 @@ $wb['xfer_txt'] = 'Allow zone transfers to <br />these IPs (comma separated list
 $wb['server_id_error_empty'] = 'No server selected';
 $wb['origin_error_empty'] = 'Zone empty.';
 $wb['origin_error_unique'] = 'There is already a record for this zone.';
-$wb['origin_error_regex'] = 'Zone has a invalid format.';
+$wb['origin_error_regex'] = 'Zone has an invalid format.';
 $wb['ns_error_regex'] = 'NS has a invalid format.';
 $wb['eg_domain_tld'] = 'e.g. domain.tld.';
 $wb['ipv4_form_txt'] = 'Separate multiple IPs with commas';
diff --git a/interface/web/dns/lib/lang/pt_dns_slave.lng b/interface/web/dns/lib/lang/pt_dns_slave.lng
index 416e3d6e722ccae2c29e3da6707d1d36eb4155b0..9e8aaa17f910bee7a6c04008ad844c294689e8ff 100644
--- a/interface/web/dns/lib/lang/pt_dns_slave.lng
+++ b/interface/web/dns/lib/lang/pt_dns_slave.lng
@@ -9,7 +9,7 @@ $wb['xfer_txt'] = 'Allow zone transfers to <br />these IPs (comma separated list
 $wb['server_id_error_empty'] = 'No server selected';
 $wb['origin_error_empty'] = 'Zone empty.';
 $wb['origin_error_unique'] = 'There is already a record for this zone.';
-$wb['origin_error_regex'] = 'Zone has a invalid format.';
+$wb['origin_error_regex'] = 'Zone has an invalid format.';
 $wb['ns_error_regex'] = 'NS has a invalid format.';
 $wb['eg_domain_tld'] = 'e.g. domain.tld.';
 $wb['ipv4_form_txt'] = 'Separate multiple IPs with commas';
diff --git a/interface/web/dns/lib/lang/ro_dns_slave.lng b/interface/web/dns/lib/lang/ro_dns_slave.lng
index 416e3d6e722ccae2c29e3da6707d1d36eb4155b0..9e8aaa17f910bee7a6c04008ad844c294689e8ff 100644
--- a/interface/web/dns/lib/lang/ro_dns_slave.lng
+++ b/interface/web/dns/lib/lang/ro_dns_slave.lng
@@ -9,7 +9,7 @@ $wb['xfer_txt'] = 'Allow zone transfers to <br />these IPs (comma separated list
 $wb['server_id_error_empty'] = 'No server selected';
 $wb['origin_error_empty'] = 'Zone empty.';
 $wb['origin_error_unique'] = 'There is already a record for this zone.';
-$wb['origin_error_regex'] = 'Zone has a invalid format.';
+$wb['origin_error_regex'] = 'Zone has an invalid format.';
 $wb['ns_error_regex'] = 'NS has a invalid format.';
 $wb['eg_domain_tld'] = 'e.g. domain.tld.';
 $wb['ipv4_form_txt'] = 'Separate multiple IPs with commas';
diff --git a/interface/web/dns/lib/lang/se_dns_slave.lng b/interface/web/dns/lib/lang/se_dns_slave.lng
index 416e3d6e722ccae2c29e3da6707d1d36eb4155b0..9e8aaa17f910bee7a6c04008ad844c294689e8ff 100644
--- a/interface/web/dns/lib/lang/se_dns_slave.lng
+++ b/interface/web/dns/lib/lang/se_dns_slave.lng
@@ -9,7 +9,7 @@ $wb['xfer_txt'] = 'Allow zone transfers to <br />these IPs (comma separated list
 $wb['server_id_error_empty'] = 'No server selected';
 $wb['origin_error_empty'] = 'Zone empty.';
 $wb['origin_error_unique'] = 'There is already a record for this zone.';
-$wb['origin_error_regex'] = 'Zone has a invalid format.';
+$wb['origin_error_regex'] = 'Zone has an invalid format.';
 $wb['ns_error_regex'] = 'NS has a invalid format.';
 $wb['eg_domain_tld'] = 'e.g. domain.tld.';
 $wb['ipv4_form_txt'] = 'Separate multiple IPs with commas';
diff --git a/interface/web/dns/lib/lang/sk_dns_slave.lng b/interface/web/dns/lib/lang/sk_dns_slave.lng
index 416e3d6e722ccae2c29e3da6707d1d36eb4155b0..9e8aaa17f910bee7a6c04008ad844c294689e8ff 100644
--- a/interface/web/dns/lib/lang/sk_dns_slave.lng
+++ b/interface/web/dns/lib/lang/sk_dns_slave.lng
@@ -9,7 +9,7 @@ $wb['xfer_txt'] = 'Allow zone transfers to <br />these IPs (comma separated list
 $wb['server_id_error_empty'] = 'No server selected';
 $wb['origin_error_empty'] = 'Zone empty.';
 $wb['origin_error_unique'] = 'There is already a record for this zone.';
-$wb['origin_error_regex'] = 'Zone has a invalid format.';
+$wb['origin_error_regex'] = 'Zone has an invalid format.';
 $wb['ns_error_regex'] = 'NS has a invalid format.';
 $wb['eg_domain_tld'] = 'e.g. domain.tld.';
 $wb['ipv4_form_txt'] = 'Separate multiple IPs with commas';