diff --git a/translators/CrossRef.js b/translators/CrossRef.js
index ad0073204..65f6eb495 100644
--- a/translators/CrossRef.js
+++ b/translators/CrossRef.js
@@ -37,6 +37,11 @@ function processCrossRef(xmlOutput) {
 	
 	// ensure status is valid
 	if(!xml.doi_record.length()) return false;
+	// ensure this isn't an error
+	if(xml.doi_record.crossref.error.length()) {
+		throw xml.doi_record.crossref.error
+		return false;
+	}
 	if(xml.doi_record[0].crossref.journal.length()) {
 		var item = new Zotero.Item("journalArticle");
 		var itemXML = xml.doi_record.crossref.journal;
diff --git a/translators/DOI.js b/translators/DOI.js
index 0ad856609..31e04341c 100644
--- a/translators/DOI.js
+++ b/translators/DOI.js
@@ -11,8 +11,7 @@
 	"lastUpdated":"2009-04-07 15:48:00"
 }
 
-//var DOIre = /(doi:)?\s*(10\.[\w.]+\/[^\/\s]+)/ig;
-var DOIre = /doi:\s*(10\.[\w.]+\/[^\/\s]+)/ig;
+var DOIre = /(?:doi:)?\s*(10\.[\w.]+\/[^\/\s]+)/igm;
 
 var items = {};
 var selectArray = {};