diff --git a/plugins/kolab_notes/localization/en_US.inc b/plugins/kolab_notes/localization/en_US.inc
index e0ede7a9..318dbab5 100644
--- a/plugins/kolab_notes/localization/en_US.inc
+++ b/plugins/kolab_notes/localization/en_US.inc
@@ -65,3 +65,14 @@ $labels['arialabelnotebookform'] = 'Notebook properties';
 $labels['arialabelmessagereferences'] = 'Linked email messages';
 $labels['arialabelfolderearchform'] = 'Notebooks search form';
 $labels['arialabelnoteform'] = 'Note edit form';
+
+// history dialog
+$labels['showhistory'] = 'Show History';
+$labels['objectchangelog'] = 'Change History';
+$labels['objectdiff'] = 'Changes from $rev1 to $rev2';
+$labels['objectnotfound'] = 'Failed to load note data';
+$labels['objectchangelognotavailable'] = 'Change history is not available for this note';
+$labels['objectdiffnotavailable'] = 'No comparison possible for the selected revisions';
+$labels['revisionrestoreconfirm'] = 'Do you really want to restore revision $rev of this note? This will replace the current note with the old version.';
+$labels['objectrestoresuccess'] = 'Revision $rev successfully restored';
+$labels['objectrestoreerror'] = 'Failed to restore the old revision';