diff --git a/app/src/main/res/drawable/ic_launcher_background.xml b/app/src/main/res/drawable/ic_launcher_background.xml
index 8e9a643..de42250 100644
--- a/app/src/main/res/drawable/ic_launcher_background.xml
+++ b/app/src/main/res/drawable/ic_launcher_background.xml
@@ -4,8 +4,7 @@
     android:height="108dp"
     android:viewportWidth="108"
     android:viewportHeight="108">
-    <rect
+    <path
         android:fillColor="#4CAF50"
-        android:height="108"
-        android:width="108" />
+        android:pathData="M0,0h108v108H0z" />
 </vector>
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index 23cbbef..6b2dd5e 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <style name="Theme.Krisenvorrat" parent="Theme.Material3.DayNight.NoActionBar" />
+    <style name="Theme.Krisenvorrat" parent="android:Theme.Material.Light.NoActionBar" />
 </resources>
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 0000000..f53889c
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1,3 @@
+android.useAndroidX=true
+kotlin.code.style=official
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8