diff --git a/installer/data/mysql/atomicupdate/bz27136-Add_languages_for_facet.pl b/installer/data/mysql/atomicupdate/bz27136-Add_languages_for_facet.pl
index 293b1d09c3..189b6cd6dc 100644
--- a/installer/data/mysql/atomicupdate/bz27136-Add_languages_for_facet.pl
+++ b/installer/data/mysql/atomicupdate/bz27136-Add_languages_for_facet.pl
@@ -6,30 +6,30 @@ return {
     up => sub {
         my ($args) = @_;
         my ($dbh, $out) = @$args{qw(dbh out)};
-        $dbh->do(q{ INSERT INTO language_subtag_registry (subtag, type, description, added) VALUES ('cr', 'language', 'Cree', now()) });
-        $dbh->do(q{ INSERT INTO language_descriptions (subtag, type, lang, description) VALUES ('cr', 'language', 'en', 'Cree') });
-        $dbh->do(q{ INSERT INTO language_descriptions (subtag, type, lang, description) VALUES ('cr', 'language', 'fr', 'Cree') });
-        $dbh->do(q{ INSERT INTO language_rfc4646_to_iso639 (rfc4646_subtag, iso639_2_code) VALUES ('cr', 'cre') });
+        $dbh->do(q{ INSERT IGNORE INTO language_subtag_registry (subtag, type, description, added) VALUES ('cr', 'language', 'Cree', now()) });
+        $dbh->do(q{ INSERT IGNORE INTO language_descriptions (subtag, type, lang, description) VALUES ('cr', 'language', 'en', 'Cree') });
+        $dbh->do(q{ INSERT IGNORE INTO language_descriptions (subtag, type, lang, description) VALUES ('cr', 'language', 'fr', 'Cree') });
+        $dbh->do(q{ INSERT IGNORE INTO language_rfc4646_to_iso639 (rfc4646_subtag, iso639_2_code) VALUES ('cr', 'cre') });
 
-        $dbh->do(q{ INSERT INTO language_subtag_registry (subtag, type, description, added) VALUES ('af', 'language', 'Afrikaans', now()) });
-        $dbh->do(q{ INSERT INTO language_descriptions (subtag, type, lang, description) VALUES ('af', 'language', 'en', 'Afrikaans') });
-        $dbh->do(q{ INSERT INTO language_descriptions (subtag, type, lang, description) VALUES ('af', 'language', 'fr', 'Afrikaans') });
-        $dbh->do(q{ INSERT INTO language_rfc4646_to_iso639 (rfc4646_subtag, iso639_2_code) VALUES ('af', 'afr') });
+        $dbh->do(q{ INSERT IGNORE INTO language_subtag_registry (subtag, type, description, added) VALUES ('af', 'language', 'Afrikaans', now()) });
+        $dbh->do(q{ INSERT IGNORE INTO language_descriptions (subtag, type, lang, description) VALUES ('af', 'language', 'en', 'Afrikaans') });
+        $dbh->do(q{ INSERT IGNORE INTO language_descriptions (subtag, type, lang, description) VALUES ('af', 'language', 'fr', 'Afrikaans') });
+        $dbh->do(q{ INSERT IGNORE INTO language_rfc4646_to_iso639 (rfc4646_subtag, iso639_2_code) VALUES ('af', 'afr') });
 
-        $dbh->do(q{ INSERT INTO language_subtag_registry (subtag, type, description, added) VALUES ('mul', 'language', 'Multiple languages', now()) });
-        $dbh->do(q{ INSERT INTO language_descriptions (subtag, type, lang, description) VALUES ('mul', 'language', 'en', 'Multiple languages') });
-        $dbh->do(q{ INSERT INTO language_descriptions (subtag, type, lang, description) VALUES ('mul', 'language', 'fr', 'Multilingue') });
-        $dbh->do(q{ INSERT INTO language_rfc4646_to_iso639 (rfc4646_subtag, iso639_2_code) VALUES ('mul', 'mul') });
+        $dbh->do(q{ INSERT IGNORE INTO language_subtag_registry (subtag, type, description, added) VALUES ('mul', 'language', 'Multiple languages', now()) });
+        $dbh->do(q{ INSERT IGNORE INTO language_descriptions (subtag, type, lang, description) VALUES ('mul', 'language', 'en', 'Multiple languages') });
+        $dbh->do(q{ INSERT IGNORE INTO language_descriptions (subtag, type, lang, description) VALUES ('mul', 'language', 'fr', 'Multilingue') });
+        $dbh->do(q{ INSERT IGNORE INTO language_rfc4646_to_iso639 (rfc4646_subtag, iso639_2_code) VALUES ('mul', 'mul') });
 
-        $dbh->do(q{ INSERT INTO language_subtag_registry (subtag, type, description, added) VALUES ('und', 'language', 'Undetermined', now()) });
-        $dbh->do(q{ INSERT INTO language_descriptions (subtag, type, lang, description) VALUES ('und', 'language', 'en', 'Undetermined') });
-        $dbh->do(q{ INSERT INTO language_descriptions (subtag, type, lang, description) VALUES ('und', 'language', 'fr', 'Indéterminée') });
-        $dbh->do(q{ INSERT INTO language_rfc4646_to_iso639 (rfc4646_subtag, iso639_2_code) VALUES ('und', 'und') });
+        $dbh->do(q{ INSERT IGNORE INTO language_subtag_registry (subtag, type, description, added) VALUES ('und', 'language', 'Undetermined', now()) });
+        $dbh->do(q{ INSERT IGNORE INTO language_descriptions (subtag, type, lang, description) VALUES ('und', 'language', 'en', 'Undetermined') });
+        $dbh->do(q{ INSERT IGNORE INTO language_descriptions (subtag, type, lang, description) VALUES ('und', 'language', 'fr', 'Indéterminée') });
+        $dbh->do(q{ INSERT IGNORE INTO language_rfc4646_to_iso639 (rfc4646_subtag, iso639_2_code) VALUES ('und', 'und') });
 
-        $dbh->do(q{ INSERT INTO language_subtag_registry (subtag, type, description, added) VALUES ('zxx', 'language', 'No linguistic content', now()) });
-        $dbh->do(q{ INSERT INTO language_descriptions (subtag, type, lang, description) VALUES ('zxx', 'language', 'en', 'No linguistic content') });
-        $dbh->do(q{ INSERT INTO language_descriptions (subtag, type, lang, description) VALUES ('zxx', 'language', 'fr', 'Pas de contenu linguistique') });
-        $dbh->do(q{ INSERT INTO language_rfc4646_to_iso639 (rfc4646_subtag, iso639_2_code) VALUES ('zxx', 'zxx') });
+        $dbh->do(q{ INSERT IGNORE INTO language_subtag_registry (subtag, type, description, added) VALUES ('zxx', 'language', 'No linguistic content', now()) });
+        $dbh->do(q{ INSERT IGNORE INTO language_descriptions (subtag, type, lang, description) VALUES ('zxx', 'language', 'en', 'No linguistic content') });
+        $dbh->do(q{ INSERT IGNORE INTO language_descriptions (subtag, type, lang, description) VALUES ('zxx', 'language', 'fr', 'Pas de contenu linguistique') });
+        $dbh->do(q{ INSERT IGNORE INTO language_rfc4646_to_iso639 (rfc4646_subtag, iso639_2_code) VALUES ('zxx', 'zxx') });
         say $out "Added missing languages";
     },
 };