diff --git a/lib/wrench.js b/lib/wrench.js
index 00f4166..ce7acda 100644
--- a/lib/wrench.js
+++ b/lib/wrench.js
@@ -183,6 +183,11 @@ exports.copyDirSyncRecursive = function(sourceDir, newDirLocation, opts) {
     var files = fs.readdirSync(sourceDir);
 
     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;
+        
         var currFile = fs.lstatSync(sourceDir + "/" + files[i]);
 
         if(currFile.isDirectory()) {