diff --git a/locale/bg.po b/locale/bg.po
index 1b76823a4d..4093444dbd 100644
--- a/locale/bg.po
+++ b/locale/bg.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/ca.po b/locale/ca.po
index 8bf7180a24..cc1edbb2fb 100644
--- a/locale/ca.po
+++ b/locale/ca.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/cs.po b/locale/cs.po
index a65490ad48..25c3434aa6 100644
--- a/locale/cs.po
+++ b/locale/cs.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/de.po b/locale/de.po
index 07d7e352b9..f52be8f536 100644
--- a/locale/de.po
+++ b/locale/de.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/es.po b/locale/es.po
index c334488105..db4ca3e9cf 100644
--- a/locale/es.po
+++ b/locale/es.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/es_419.po b/locale/es_419.po
index 71c505e830..ab7f9b39da 100644
--- a/locale/es_419.po
+++ b/locale/es_419.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/fr.po b/locale/fr.po
index a0f45e2d41..5b4ff25570 100644
--- a/locale/fr.po
+++ b/locale/fr.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/hu_HU.po b/locale/hu_HU.po
index 36cb04bae1..53b0aab5a8 100644
--- a/locale/hu_HU.po
+++ b/locale/hu_HU.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/it_IT.po b/locale/it_IT.po
index 4052d15c14..a5b641a05d 100644
--- a/locale/it_IT.po
+++ b/locale/it_IT.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/ja_JP.po b/locale/ja_JP.po
index 35bdfb84a3..056c506fa9 100644
--- a/locale/ja_JP.po
+++ b/locale/ja_JP.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/lo.po b/locale/lo.po
index c6208c970c..e650ed13b2 100644
--- a/locale/lo.po
+++ b/locale/lo.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/lt.po b/locale/lt.po
index a65490ad48..25c3434aa6 100644
--- a/locale/lt.po
+++ b/locale/lt.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/nl.po b/locale/nl.po
index 7fc352715e..c87a61c484 100644
--- a/locale/nl.po
+++ b/locale/nl.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/pl.po b/locale/pl.po
index 35bdfb84a3..8f941978d0 100644
--- a/locale/pl.po
+++ b/locale/pl.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
@@ -8,7 +8,7 @@ msgstr ""
 
 msgctxt "model:ir.action,name:report_letter"
 msgid "Dunning Letter"
-msgstr "Dunning Letter"
+msgstr ""
 
 msgctxt "report:account.dunning.letter:"
 msgid "Amount"
@@ -16,15 +16,15 @@ msgstr ""
 
 msgctxt "report:account.dunning.letter:"
 msgid "Date"
-msgstr ""
+msgstr "Data"
 
 msgctxt "report:account.dunning.letter:"
 msgid "Date:"
-msgstr ""
+msgstr "Data:"
 
 msgctxt "report:account.dunning.letter:"
 msgid "Description"
-msgstr ""
+msgstr "Opis"
 
 msgctxt "report:account.dunning.letter:"
 msgid "Due Date"
diff --git a/locale/pt_BR.po b/locale/pt_BR.po
index 84dadd155f..a5a200bda8 100644
--- a/locale/pt_BR.po
+++ b/locale/pt_BR.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/ru.po b/locale/ru.po
index e0320c3498..e52e856391 100644
--- a/locale/ru.po
+++ b/locale/ru.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/sl.po b/locale/sl.po
index d41de75e62..32d6298dc4 100644
--- a/locale/sl.po
+++ b/locale/sl.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
diff --git a/locale/zh_CN.po b/locale/zh_CN.po
index c0fd14f273..32a98b4cc8 100644
--- a/locale/zh_CN.po
+++ b/locale/zh_CN.po
@@ -1,4 +1,4 @@
-# 
+#
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"