diff --git a/kotlin-native/samples/calculator/iosApp/calculator/Base.lproj/Main.storyboard b/kotlin-native/samples/calculator/iosApp/calculator/Base.lproj/Main.storyboard
index 72546e9149b..b06d278fdd1 100644
--- a/kotlin-native/samples/calculator/iosApp/calculator/Base.lproj/Main.storyboard
+++ b/kotlin-native/samples/calculator/iosApp/calculator/Base.lproj/Main.storyboard
@@ -5,7 +5,7 @@
     </device>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13173"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="17505"/>
         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
@@ -23,6 +23,7 @@
                                 <rect key="frame" x="16" y="80" width="288" height="86"/>
                                 <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMinY="YES"/>
                                 <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                                <color key="textColor" white="0.66666666666666663" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="17"/>
                                 <textInputTraits key="textInputTraits" autocapitalizationType="sentences" keyboardType="numbersAndPunctuation"/>
                                 <userDefinedRuntimeAttributes>
@@ -35,14 +36,14 @@
                                 <rect key="frame" x="16" y="20" width="288" height="52"/>
                                 <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMinY="YES"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                <nil key="textColor"/>
+                                <color key="textColor" white="0.66666666666666663" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                                 <nil key="highlightedColor"/>
                             </label>
                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Label" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="dE5-rs-MxS">
                                 <rect key="frame" x="16" y="174" width="288" height="56"/>
                                 <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMinY="YES"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                <nil key="textColor"/>
+                                <color key="textColor" white="0.66666666666666663" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                                 <nil key="highlightedColor"/>
                             </label>
                             <collectionView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" fixedFrame="YES" dataMode="prototypes" translatesAutoresizingMaskIntoConstraints="NO" id="uUY-IG-q6c">