diff --git a/app/src/main/res/values-v21/styles.xml b/app/src/main/res/values-v21/styles.xml
deleted file mode 100644
index 88dcfd806..000000000
--- a/app/src/main/res/values-v21/styles.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-
-    <style name="ArrowStyle">
-        <item name="android:background">?android:attr/selectableItemBackgroundBorderless</item>
-    </style>
-
-    <style name="MonthStyle">
-        <item name="android:background">?android:attr/selectableItemBackground</item>
-    </style>
-
-</resources>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 987325f52..3f41654af 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -23,10 +23,10 @@
     </style>
 
     <style name="ArrowStyle">
-        <item name="android:background">@drawable/transparent_button</item>
+        <item name="android:background">?android:attr/selectableItemBackgroundBorderless</item>
     </style>
 
     <style name="MonthStyle">
-        <item name="android:background">@drawable/transparent_button</item>
+        <item name="android:background">?android:attr/selectableItemBackground</item>
     </style>
 </resources>