diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/ReaderPageImageView.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/ReaderPageImageView.kt
index 7fe5ec98ec76..c0f0a3fecc0f 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/ReaderPageImageView.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/ReaderPageImageView.kt
@@ -122,21 +122,22 @@ open class ReaderPageImageView @JvmOverloads constructor(
     }
 
     private fun SubsamplingScaleImageView.landscapeZoom(forward: Boolean) {
+        val config = config
         if (config != null &&
-            config!!.landscapeZoom &&
-            config!!.minimumScaleType == SCALE_TYPE_CENTER_INSIDE &&
+            config.landscapeZoom &&
+            config.minimumScaleType == SCALE_TYPE_CENTER_INSIDE &&
             sWidth > sHeight &&
             scale == minScale
         ) {
             handler?.postDelayed(500) {
-                val point = when (config!!.zoomStartPosition) {
+                val point = when (config.zoomStartPosition) {
                     ZoomStartPosition.LEFT -> if (forward) PointF(0F, 0F) else PointF(sWidth.toFloat(), 0F)
                     ZoomStartPosition.RIGHT -> if (forward) PointF(sWidth.toFloat(), 0F) else PointF(0F, 0F)
                     ZoomStartPosition.CENTER -> center
                 }
 
                 val targetScale = height.toFloat() / sHeight.toFloat()
-                animateScaleAndCenter(targetScale, point)!!
+                (animateScaleAndCenter(targetScale, point) ?: return@postDelayed)
                     .withDuration(500)
                     .withEasing(EASE_IN_OUT_QUAD)
                     .withInterruptible(true)