diff --git a/app/src/main/java/com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.kt b/app/src/main/java/com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.kt
index 4b420f3fb..25ec9f207 100644
--- a/app/src/main/java/com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.kt
+++ b/app/src/main/java/com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.kt
@@ -476,8 +476,10 @@ open class SubsamplingScaleImageView @JvmOverloads constructor(
 
     private fun setGestureDetector(context: Context) {
         detector = GestureDetector(context, object : GestureDetector.SimpleOnGestureListener() {
+            @Suppress("SENSELESS_COMPARISON")
             override fun onFling(e1: MotionEvent, e2: MotionEvent, velocityX: Float, velocityY: Float): Boolean {
-                if (panEnabled && isReady && vTranslate != null && (abs(e1.x - e2.x) > 50 || abs(e1.y - e2.y) > 50) && (abs(velocityX) > 500 || abs(velocityY) > 500) && !isZooming) {
+                // The e1 can be null, that's weird and cause crash
+                if (panEnabled && isReady && vTranslate != null && e1 != null && e2 != null && (abs(e1.x - e2.x) > 50 || abs(e1.y - e2.y) > 50) && (abs(velocityX) > 500 || abs(velocityY) > 500) && !isZooming) {
                     val vTranslateEnd = PointF(vTranslate!!.x + velocityX * 0.25F, vTranslate!!.y + velocityY * 0.25F)
                     val sCenterXEnd = (width / 2 - vTranslateEnd.x) / scale
                     val sCenterYEnd = (height / 2 - vTranslateEnd.y) / scale