diff --git a/lib/swagger-express/index.js b/lib/swagger-express/index.js
index 88bea8d5..53d5cace 100644
--- a/lib/swagger-express/index.js
+++ b/lib/swagger-express/index.js
@@ -46,6 +46,11 @@ function parseJsDocs(file, fn) {
     var fragments = js.match(regex);
     var docs = [];
 
+    if (!fragments) {
+      fn(null, docs);
+      return;
+    }
+    
     for (var i = 0; i < fragments.length; i++) {
       var fragment = fragments[i];
       var doc = doctrine.parse(fragment, { unwrap: true });