diff --git a/chrome/content/zotero/bindings/itembox.xml b/chrome/content/zotero/bindings/itembox.xml
index f1e23c6b3..927d76448 100644
--- a/chrome/content/zotero/bindings/itembox.xml
+++ b/chrome/content/zotero/bindings/itembox.xml
@@ -1819,9 +1819,6 @@
 				<![CDATA[
 					var val = this._getFieldValue(label);
 					switch (mode) {
-						case 'lower':
-							var newVal = val.toLowerCase();
-							break;
 						case 'title':
 							var newVal = Zotero.Utilities.capitalizeTitle(val.toLowerCase(), true);
 							break;
@@ -2271,8 +2268,6 @@
 									oncommand="document.getBindingParent(this).textTransform(document.popupNode, 'title')"/>
 								<menuitem label="&zotero.item.textTransform.sentencecase;" class="menuitem-non-iconic"
 									oncommand="document.getBindingParent(this).textTransform(document.popupNode, 'sentence')"/>
-								<menuitem label="&zotero.item.textTransform.lowercase;" class="menuitem-non-iconic"
-									oncommand="document.getBindingParent(this).textTransform(document.popupNode, 'lower')"/>
 							</menupopup>
 						</menu>
 					</menupopup>
diff --git a/chrome/locale/en-US/zotero/zotero.dtd b/chrome/locale/en-US/zotero/zotero.dtd
index e1838662d..07eb6c5d1 100644
--- a/chrome/locale/en-US/zotero/zotero.dtd
+++ b/chrome/locale/en-US/zotero/zotero.dtd
@@ -97,7 +97,6 @@
 <!ENTITY zotero.item.add								"Add">
 <!ENTITY zotero.item.attachment.file.show				"Show File">
 <!ENTITY zotero.item.textTransform						"Transform Text">
-<!ENTITY zotero.item.textTransform.lowercase			"lower case">
 <!ENTITY zotero.item.textTransform.titlecase			"Title Case">
 <!ENTITY zotero.item.textTransform.sentencecase			"Sentence case">