diff --git a/locale/es_419.po b/locale/es_419.po
new file mode 100644
index 0000000000..022df11535
--- /dev/null
+++ b/locale/es_419.po
@@ -0,0 +1,23 @@
+# 
+msgid ""
+msgstr "Content-Type: text/plain; charset=utf-8\n"
+
+msgctxt "error:party.address:"
+msgid "Invalid SIRET number \"%(siret)s\" on address \"%(address)s\""
+msgstr ""
+
+msgctxt "error:party.party:"
+msgid "Invalid SIREN number \"%(siren)s\" on party \"%(party)s\"."
+msgstr ""
+
+msgctxt "field:party.address,siret:"
+msgid "SIRET"
+msgstr ""
+
+msgctxt "field:party.address,siret_nic:"
+msgid "SIRET NIC"
+msgstr ""
+
+msgctxt "field:party.party,siren:"
+msgid "SIREN"
+msgstr ""
diff --git a/locale/pl.po b/locale/pl.po
new file mode 100644
index 0000000000..e94dc34bee
--- /dev/null
+++ b/locale/pl.po
@@ -0,0 +1,23 @@
+# 
+msgid ""
+msgstr "Content-Type: text/plain; charset=utf-8\n"
+
+msgctxt "error:party.address:"
+msgid "Invalid SIRET number \"%(siret)s\" on address \"%(address)s\""
+msgstr "Niewłaściwy numer SIRET \"%(siret)s\" dla adresu \"%(address)s\""
+
+msgctxt "error:party.party:"
+msgid "Invalid SIREN number \"%(siren)s\" on party \"%(party)s\"."
+msgstr "Niewłaściwy numer SIREN \"%(siren)s\" dla strony \"%(party)s\"."
+
+msgctxt "field:party.address,siret:"
+msgid "SIRET"
+msgstr "SIRET"
+
+msgctxt "field:party.address,siret_nic:"
+msgid "SIRET NIC"
+msgstr "SIRET NIC"
+
+msgctxt "field:party.party,siren:"
+msgid "SIREN"
+msgstr "SIREN"
diff --git a/setup.py b/setup.py
index 5f2d685de2..117f7c88dc 100644
--- a/setup.py
+++ b/setup.py
@@ -90,6 +90,7 @@ setup(name=name,
         'Natural Language :: German',
         'Natural Language :: Hungarian',
         'Natural Language :: Italian',
+        'Natural Language :: Polish',
         'Natural Language :: Portuguese (Brazilian)',
         'Natural Language :: Russian',
         'Natural Language :: Slovenian',