diff --git a/lib/AssetGraph.js b/lib/AssetGraph.js
index <HASH>..<HASH> 100644
--- a/lib/AssetGraph.js
+++ b/lib/AssetGraph.js
@@ -332,11 +332,7 @@ AssetGraph.prototype = {
                         });
                     },
                     error.passToFunction(cb, function (resolvedAssetConfigs) {
-                        var flattened = [];
-                        resolvedAssetConfigs.forEach(function (resolvedAssetConfig) {
-                            Array.prototype.push.apply(flattened, _.isArray(resolvedAssetConfig) ? resolvedAssetConfig : [resolvedAssetConfig]);
-                        });
-                        cb(null, flattened);
+                        cb(null, _.flatten(resolvedAssetConfigs));
                     })
                 );
             }
AssetGraph.resolveAssetConfig: Used _.flatten to simplify a piece of code.