diff --git a/locale/es_419.po b/locale/es_419.po
new file mode 100644
index 0000000000..5bd7c69a9e
--- /dev/null
+++ b/locale/es_419.po
@@ -0,0 +1,19 @@
+# 
+msgid ""
+msgstr "Content-Type: text/plain; charset=utf-8\n"
+
+msgctxt "field:party.party,sale_invoice_grouping_method:"
+msgid "Sale Invoice Grouping Method"
+msgstr "Método de agrupación de facturas de venta"
+
+msgctxt "selection:party.party,sale_invoice_grouping_method:"
+msgid "None"
+msgstr ""
+
+msgctxt "selection:party.party,sale_invoice_grouping_method:"
+msgid "Standard"
+msgstr ""
+
+msgctxt "view:party.party:"
+msgid "Invoicing"
+msgstr ""
diff --git a/locale/it_IT.po b/locale/it_IT.po
index c6a8b3faf7..98302c887c 100644
--- a/locale/it_IT.po
+++ b/locale/it_IT.po
@@ -4,18 +4,16 @@ msgstr "Content-Type: text/plain; charset=utf-8\n"
 
 msgctxt "field:party.party,sale_invoice_grouping_method:"
 msgid "Sale Invoice Grouping Method"
-msgstr ""
+msgstr "Metodo di raggruppamento in fattura vendita"
 
-#, fuzzy
 msgctxt "selection:party.party,sale_invoice_grouping_method:"
 msgid "None"
 msgstr "Nessuno"
 
-#, fuzzy
 msgctxt "selection:party.party,sale_invoice_grouping_method:"
 msgid "Standard"
 msgstr "Standard"
 
 msgctxt "view:party.party:"
 msgid "Invoicing"
-msgstr ""
+msgstr "fatturazione"
diff --git a/locale/pl.po b/locale/pl.po
new file mode 100644
index 0000000000..3bc68e71c6
--- /dev/null
+++ b/locale/pl.po
@@ -0,0 +1,19 @@
+# 
+msgid ""
+msgstr "Content-Type: text/plain; charset=utf-8\n"
+
+msgctxt "field:party.party,sale_invoice_grouping_method:"
+msgid "Sale Invoice Grouping Method"
+msgstr ""
+
+msgctxt "selection:party.party,sale_invoice_grouping_method:"
+msgid "None"
+msgstr ""
+
+msgctxt "selection:party.party,sale_invoice_grouping_method:"
+msgid "Standard"
+msgstr ""
+
+msgctxt "view:party.party:"
+msgid "Invoicing"
+msgstr ""
diff --git a/setup.py b/setup.py
index 43e55bb831..f3486e2721 100644
--- a/setup.py
+++ b/setup.py
@@ -94,6 +94,7 @@ 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',