diff --git a/chrome/content/zotero/bindings/itembox.xml b/chrome/content/zotero/bindings/itembox.xml
index 83bc6872e6..f1e23c6b36 100644
--- a/chrome/content/zotero/bindings/itembox.xml
+++ b/chrome/content/zotero/bindings/itembox.xml
@@ -1825,6 +1825,9 @@
 						case 'title':
 							var newVal = Zotero.Utilities.capitalizeTitle(val.toLowerCase(), true);
 							break;
+						case 'sentence':
+							var newVal = val.length ? val[0].toUpperCase()+val.substr(1).toLowerCase() : val;
+							break;
 						default:
 							throw ("Invalid transform mode '" + mode + "' in zoteroitembox.textTransform()");
 					}
@@ -2264,10 +2267,12 @@
 					<menupopup id="field-menu">
 						<menu label="&zotero.item.textTransform;">
 							<menupopup>
-								<menuitem label="&zotero.item.textTransform.lowercase;" class="menuitem-non-iconic"
-									oncommand="document.getBindingParent(this).textTransform(document.popupNode, 'lower')"/>
 								<menuitem label="&zotero.item.textTransform.titlecase;" class="menuitem-non-iconic"
 									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 12ca6df0cd..e1838662df 100644
--- a/chrome/locale/en-US/zotero/zotero.dtd
+++ b/chrome/locale/en-US/zotero/zotero.dtd
@@ -99,6 +99,7 @@
 <!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">
 
 <!ENTITY zotero.toolbar.newNote				"New Note">
 <!ENTITY zotero.toolbar.note.standalone				"New Standalone Note">