diff --git a/lib/less/tree/import.js b/lib/less/tree/import.js
index 9fb76fde..02594a79 100644
--- a/lib/less/tree/import.js
+++ b/lib/less/tree/import.js
@@ -22,7 +22,7 @@ tree.Import = function (path, imports, features, once, index, rootpath) {
 		
     // The '.less' extension is optional
     if (path instanceof tree.Quoted) {
-        this.path = /(\.[a-z]*$)|([\?;].*)?$/.test(path.value) ? path.value : path.value + '.less';
+        this.path = /(\.[a-z]*$)|([\?;].*)$/.test(path.value) ? path.value : path.value + '.less';
     } else {
         this.path = path.value.value || path.value;
     }