diff --git a/chrome/content/zotero/preferences/preferences.xul b/chrome/content/zotero/preferences/preferences.xul
index ae4ae0d2f..072ccdf24 100644
--- a/chrome/content/zotero/preferences/preferences.xul
+++ b/chrome/content/zotero/preferences/preferences.xul
@@ -116,7 +116,7 @@ To add a new preference:
-
+
diff --git a/chrome/locale/bg-BG/zotero/preferences.dtd b/chrome/locale/bg-BG/zotero/preferences.dtd
index 4e0f70144..438508013 100644
--- a/chrome/locale/bg-BG/zotero/preferences.dtd
+++ b/chrome/locale/bg-BG/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/de-AT/zotero/preferences.dtd b/chrome/locale/de-AT/zotero/preferences.dtd
index 337260473..928b8e310 100644
--- a/chrome/locale/de-AT/zotero/preferences.dtd
+++ b/chrome/locale/de-AT/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/de-CH/zotero/preferences.dtd b/chrome/locale/de-CH/zotero/preferences.dtd
index 337260473..928b8e310 100644
--- a/chrome/locale/de-CH/zotero/preferences.dtd
+++ b/chrome/locale/de-CH/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/de-DE/zotero/preferences.dtd b/chrome/locale/de-DE/zotero/preferences.dtd
index 977160fd5..f6c00f176 100644
--- a/chrome/locale/de-DE/zotero/preferences.dtd
+++ b/chrome/locale/de-DE/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/en-US/zotero/preferences.dtd b/chrome/locale/en-US/zotero/preferences.dtd
index 23a5ec151..3a99e3fc2 100644
--- a/chrome/locale/en-US/zotero/preferences.dtd
+++ b/chrome/locale/en-US/zotero/preferences.dtd
@@ -19,7 +19,7 @@
-
+
diff --git a/chrome/locale/es-ES/zotero/preferences.dtd b/chrome/locale/es-ES/zotero/preferences.dtd
index b80bbe9a3..319403348 100644
--- a/chrome/locale/es-ES/zotero/preferences.dtd
+++ b/chrome/locale/es-ES/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/fr-FR/zotero/preferences.dtd b/chrome/locale/fr-FR/zotero/preferences.dtd
index 80c650a08..519aa4be1 100644
--- a/chrome/locale/fr-FR/zotero/preferences.dtd
+++ b/chrome/locale/fr-FR/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/it-IT/zotero/preferences.dtd b/chrome/locale/it-IT/zotero/preferences.dtd
index 9297c95af..a438eb1ec 100644
--- a/chrome/locale/it-IT/zotero/preferences.dtd
+++ b/chrome/locale/it-IT/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/ja-JP/zotero/preferences.dtd b/chrome/locale/ja-JP/zotero/preferences.dtd
index c31bced6d..f87757151 100644
--- a/chrome/locale/ja-JP/zotero/preferences.dtd
+++ b/chrome/locale/ja-JP/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/ko-KR/zotero/preferences.dtd b/chrome/locale/ko-KR/zotero/preferences.dtd
index 0efd8b6e0..08d2dd9df 100644
--- a/chrome/locale/ko-KR/zotero/preferences.dtd
+++ b/chrome/locale/ko-KR/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/nb-NO/zotero/preferences.dtd b/chrome/locale/nb-NO/zotero/preferences.dtd
index e2db208f4..240658468 100644
--- a/chrome/locale/nb-NO/zotero/preferences.dtd
+++ b/chrome/locale/nb-NO/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/nl-NL/zotero/preferences.dtd b/chrome/locale/nl-NL/zotero/preferences.dtd
index 08db316ba..46867381f 100644
--- a/chrome/locale/nl-NL/zotero/preferences.dtd
+++ b/chrome/locale/nl-NL/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/pt-BR/zotero/preferences.dtd b/chrome/locale/pt-BR/zotero/preferences.dtd
index 906d44199..6360eed60 100644
--- a/chrome/locale/pt-BR/zotero/preferences.dtd
+++ b/chrome/locale/pt-BR/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/sr-YU/zotero/preferences.dtd b/chrome/locale/sr-YU/zotero/preferences.dtd
index b0ec8bdfa..c8db88b11 100644
--- a/chrome/locale/sr-YU/zotero/preferences.dtd
+++ b/chrome/locale/sr-YU/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/tr-TR/zotero/preferences.dtd b/chrome/locale/tr-TR/zotero/preferences.dtd
index 091cb7923..cd77eaa79 100644
--- a/chrome/locale/tr-TR/zotero/preferences.dtd
+++ b/chrome/locale/tr-TR/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/zh-CN/zotero/preferences.dtd b/chrome/locale/zh-CN/zotero/preferences.dtd
index 5805b9582..194c9d8c4 100644
--- a/chrome/locale/zh-CN/zotero/preferences.dtd
+++ b/chrome/locale/zh-CN/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-
diff --git a/chrome/locale/zh-TW/zotero/preferences.dtd b/chrome/locale/zh-TW/zotero/preferences.dtd
index d7217a3bd..7cfad4cef 100644
--- a/chrome/locale/zh-TW/zotero/preferences.dtd
+++ b/chrome/locale/zh-TW/zotero/preferences.dtd
@@ -19,7 +19,6 @@
-