diff --git a/app/src/main/java/com/orgzly/android/ui/notes/OnSwipeListener.kt b/app/src/main/java/com/orgzly/android/ui/notes/OnSwipeListener.kt
index 6598ae798..86cc424fd 100644
--- a/app/src/main/java/com/orgzly/android/ui/notes/OnSwipeListener.kt
+++ b/app/src/main/java/com/orgzly/android/ui/notes/OnSwipeListener.kt
@@ -9,7 +9,7 @@ import kotlin.math.atan2
  */
 open class OnSwipeListener : SimpleOnGestureListener() {
     override fun onFling(
-        e1: MotionEvent,
+        e1: MotionEvent?,
         e2: MotionEvent,
         velocityX: Float,
         velocityY: Float
@@ -33,7 +33,7 @@ open class OnSwipeListener : SimpleOnGestureListener() {
         //  C => it's a DOWN swipe
         //  D => it's a LEFT swipe
 
-        val x1 = e1.x
+        val x1 = e1!!.x
         val y1 = e1.y
         val x2 = e2.x
         val y2 = e2.y