diff --git a/AndroidCalculator/Base.lproj/Main.storyboard b/AndroidCalculator/Base.lproj/Main.storyboard
index 4a97442..df8d7c0 100644
--- a/AndroidCalculator/Base.lproj/Main.storyboard
+++ b/AndroidCalculator/Base.lproj/Main.storyboard
@@ -252,6 +252,13 @@
                                         <nil key="textColor"/>
                                         <nil key="highlightedColor"/>
                                     </label>
+                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="＿" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="RT6-kl-3Um">
+                                        <rect key="frame" x="167" y="152" width="24" height="36"/>
+                                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                        <fontDescription key="fontDescription" type="boldSystem" pointSize="48"/>
+                                        <color key="textColor" red="0.83741801979999997" green="0.83743780850000005" blue="0.83742713930000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                                        <nil key="highlightedColor"/>
+                                    </label>
                                 </subviews>
                                 <color key="backgroundColor" systemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
                             </view>