diff --git a/lib/express-handlebars.js b/lib/express-handlebars.js
index 2735f30..7ec2402 100644
--- a/lib/express-handlebars.js
+++ b/lib/express-handlebars.js
@@ -52,8 +52,7 @@ ExpressHandlebars.prototype.getPartials = function (options) {
             this.partialsDir : [this.partialsDir];
 
     if (options.partialsDir){
-        partialsDirs = Array.isArray(options.partialsDir) ?
-            partialsDirs.concat(options.partialsDir) : partialsDirs.push(options.partialsDir);
+        partialsDirs = partialsDirs.concat(options.partialsDir);
     }
 
     partialsDirs = partialsDirs.map(function (dir) {