diff --git a/lib/vCardFormatter.js b/lib/vCardFormatter.js
index e90ed9f..961bbc6 100644
--- a/lib/vCardFormatter.js
+++ b/lib/vCardFormatter.js
@@ -360,11 +360,12 @@
 			}
 
 			if (vCard.url) {
-        vCard.url.forEach((number) => {
-          formattedVCardString += 'URL'+ encodingPrefix + ':' + e(number) + nl();
-        });
-
-				formattedVCardString += 'URL' + encodingPrefix + ':' + e(vCard.url) + nl();
+				if(!Array.isArray(vCard.url)){
+					vCard.url = [vCard.url];
+				}
+				vCard.url.forEach((url) => {
+					formattedVCardString += 'URL' + encodingPrefix + ':' + e(url) + nl();
+				});
 			}
 
 			if (vCard.workUrl) {