diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
index 583a703..7559e08 100644
--- a/app/src/main/res/values/dimens.xml
+++ b/app/src/main/res/values/dimens.xml
@@ -56,6 +56,7 @@
     <!-- StopwatchFragment -->
     <dimen name="laps_container_margin_top">8dp</dimen>
     <dimen name="chronometer_padding">16dp</dimen>
+    <dimen name="side_button_size">48dp</dimen>
 
     <!-- TimerViewHolder -->
     <dimen name="add_one_minute_text_size">18dp</dimen>
diff --git a/app/src/main/res/values/styles_stopwatch.xml b/app/src/main/res/values/styles_stopwatch.xml
index 2450ff8..4ad7fa1 100644
--- a/app/src/main/res/values/styles_stopwatch.xml
+++ b/app/src/main/res/values/styles_stopwatch.xml
@@ -6,8 +6,8 @@
         <item name="android:textSize">@dimen/text_size_display_3</item>
     </style>
     <style name="SideButton" parent="SelectableButton">
-        <item name="android:layout_width">wrap_content</item>
-        <item name="android:layout_height">wrap_content</item>
+        <item name="android:layout_width">@dimen/side_button_size</item>
+        <item name="android:layout_height">@dimen/side_button_size</item>
         <item name="android:visibility">invisible</item>
         <item name="layout_columnWeight">1</item>
         <item name="layout_gravity">center</item>