diff --git a/chrome/content/zotero/preferences/preferences.xul b/chrome/content/zotero/preferences/preferences.xul
index 81b1a832a..6271fbd57 100644
--- a/chrome/content/zotero/preferences/preferences.xul
+++ b/chrome/content/zotero/preferences/preferences.xul
@@ -50,7 +50,7 @@ To add a new preference:
 			<preference id="pref-automaticScraperUpdates" name="extensions.zotero.automaticScraperUpdates" type="bool"/>
 			<preference id="pref-reportTranslationFailure" name="extensions.zotero.reportTranslationFailure" type="bool"/>
 			<preference id="pref-zoteroDotOrgVersionHeader" name="extensions.zotero.zoteroDotOrgVersionHeader" type="bool"/>
-			<preference id="pref-parseEndNoteMIMETypes" name="extensions.zotero.parseEndNoteMIMETypes" type="bool" onchange="Zotero.Ingester.MIMEHandler.init()"/>
+			<preference id="pref-parseEndNoteMIMETypes" name="extensions.zotero.parseEndNoteMIMETypes" type="bool" onchange="Zotero.MIMETypeHandler.init()"/>
 			<preference id="pref-automaticSnapshots" name="extensions.zotero.automaticSnapshots" type="bool"/>
 			<preference id="pref-downloadAssociatedFiles" name="extensions.zotero.downloadAssociatedFiles" type="bool"/>
 			<preference id="pref-automaticTags" name="extensions.zotero.automaticTags" type="bool"/>