diff --git a/uhabits-android/build.gradle.kts b/uhabits-android/build.gradle.kts
index d12b022d1..f3e6a3451 100644
--- a/uhabits-android/build.gradle.kts
+++ b/uhabits-android/build.gradle.kts
@@ -43,13 +43,13 @@ kotlin {
 android {
 
     namespace = "org.isoron.uhabits"
-    compileSdk = 33
+    compileSdk = 34
 
     defaultConfig {
         versionCode = 20200
         versionName = "2.2.0"
         minSdk = 28
-        targetSdk = 33
+        targetSdk = 34
         applicationId = "org.isoron.uhabits"
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
diff --git a/uhabits-android/src/main/java/org/isoron/platform/gui/AndroidDataView.kt b/uhabits-android/src/main/java/org/isoron/platform/gui/AndroidDataView.kt
index 4e09eafcb..ff5f518ff 100644
--- a/uhabits-android/src/main/java/org/isoron/platform/gui/AndroidDataView.kt
+++ b/uhabits-android/src/main/java/org/isoron/platform/gui/AndroidDataView.kt
@@ -57,7 +57,7 @@ class AndroidDataView(
     }
 
     override fun onScroll(
-        e1: MotionEvent,
+        e1: MotionEvent?,
         e2: MotionEvent,
         dx: Float,
         dy: Float
@@ -79,7 +79,7 @@ class AndroidDataView(
     }
 
     override fun onFling(
-        e1: MotionEvent,
+        e1: MotionEvent?,
         e2: MotionEvent,
         velocityX: Float,
         velocityY: Float
diff --git a/uhabits-android/src/main/java/org/isoron/uhabits/activities/common/views/ScrollableChart.kt b/uhabits-android/src/main/java/org/isoron/uhabits/activities/common/views/ScrollableChart.kt
index b69e491fe..e0d311a0f 100644
--- a/uhabits-android/src/main/java/org/isoron/uhabits/activities/common/views/ScrollableChart.kt
+++ b/uhabits-android/src/main/java/org/isoron/uhabits/activities/common/views/ScrollableChart.kt
@@ -65,7 +65,7 @@ abstract class ScrollableChart : View, GestureDetector.OnGestureListener, Animat
     }
 
     override fun onFling(
-        e1: MotionEvent,
+        e1: MotionEvent?,
         e2: MotionEvent,
         velocityX: Float,
         velocityY: Float
@@ -116,7 +116,7 @@ abstract class ScrollableChart : View, GestureDetector.OnGestureListener, Animat
         return BundleSavedState(superState, bundle)
     }
 
-    override fun onScroll(e1: MotionEvent, e2: MotionEvent, dx: Float, dy: Float): Boolean {
+    override fun onScroll(e1: MotionEvent?, e2: MotionEvent, dx: Float, dy: Float): Boolean {
         var dx = dx
         if (scrollerBucketSize == 0) return false
         if (abs(dx) > abs(dy)) {