diff --git a/chrome/content/zotero/xpcom/cite.js b/chrome/content/zotero/xpcom/cite.js
index a19779db7e..39eb307da6 100644
--- a/chrome/content/zotero/xpcom/cite.js
+++ b/chrome/content/zotero/xpcom/cite.js
@@ -440,6 +440,8 @@ Zotero.Cite.System = {
 		if(typeof extra === "string") {
 			var m = /(?:^|\n)PMID:\s*([0-9]+)/.exec(extra);
 			if(m) cslItem.PMID = m[1];
+			m = /(?:^|\n)PMCID:\s*([0-9]+)/.exec(extra);
+			if(m) cslItem.PMCID = m[1];
 		}
 		
 		//this._cache[zoteroItem.id] = cslItem;