diff --git a/chrome/content/zotero/xpcom/mimeTypeHandler.js b/chrome/content/zotero/xpcom/mimeTypeHandler.js
index b299e47da..9a7af7034 100644
--- a/chrome/content/zotero/xpcom/mimeTypeHandler.js
+++ b/chrome/content/zotero/xpcom/mimeTypeHandler.js
@@ -58,7 +58,7 @@ Zotero.MIMETypeHandler = new function () {
 			this.addHandler("application/x-endnote-refer", _importHandler, true);
 			this.addHandler("application/x-research-info-systems", _importHandler, true);
 			// Add ISI
-			this.addHandler("application/x-inst-for-Scientific-info", _importHandler, true);
+			this.addHandler("application/x-inst-for-scientific-info", _importHandler, true);
 			//
 			// And some non-standard ones
 			//