diff --git a/Metaballs/Base.lproj/Main.storyboard b/Metaballs/Base.lproj/Main.storyboard
index 20a483a..db93330 100644
--- a/Metaballs/Base.lproj/Main.storyboard
+++ b/Metaballs/Base.lproj/Main.storyboard
@@ -89,7 +89,7 @@
         <scene sceneID="hIz-AP-VOD">
             <objects>
                 <viewController id="XfG-lQ-9wD" customClass="ViewController" customModule="Metaballs" customModuleProvider="target" sceneMemberID="viewController">
-                    <view key="view" wantsLayer="YES" id="m2S-Jp-Qdl">
+                    <view key="view" wantsLayer="YES" id="m2S-Jp-Qdl" customClass="MTKView">
                         <rect key="frame" x="0.0" y="0.0" width="480" height="270"/>
                         <autoresizingMask key="autoresizingMask"/>
                     </view>