diff --git a/lib/wrench.js b/lib/wrench.js
index 247874a..4c8fb9e 100644
--- a/lib/wrench.js
+++ b/lib/wrench.js
@@ -184,11 +184,13 @@ exports.copyDirSyncRecursive = function(sourceDir, newDirLocation, opts) {
 
     for(var i = 0; i < files.length; i++) {
         // ignores all files or directories which match the RegExp in opts.filter
-		if(!opts.whitelist && opts.filter && files[i].match(opts.filter)) continue;
-		// if opts.whitelist is true every file or directory which doesn't match opts.filter will be ignored
-		if(opts.whitelist && opts.filter && !files[i].match(opts.filter)) continue;
-        if (opts.excludeHiddenUnix && /^\./.test(files[i])) continue;
-        
+		if(typeof opts !== 'undefined') {
+            if(!opts.whitelist && opts.filter && files[i].match(opts.filter)) continue;
+		    // if opts.whitelist is true every file or directory which doesn't match opts.filter will be ignored
+		    if(opts.whitelist && opts.filter && !files[i].match(opts.filter)) continue;
+            if (opts.excludeHiddenUnix && /^\./.test(files[i])) continue;
+        }
+
         var currFile = fs.lstatSync(sourceDir + "/" + files[i]);
         if(currFile.isDirectory()) {
             /*  recursion this thing right on back. */