diff --git a/app/src/main/java/com/github/damontecres/wholphin/ui/CoilTrickplayTransformation.kt b/app/src/main/java/com/github/damontecres/wholphin/ui/CoilTrickplayTransformation.kt
index ace495bf..dc91eb3b 100644
--- a/app/src/main/java/com/github/damontecres/wholphin/ui/CoilTrickplayTransformation.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/ui/CoilTrickplayTransformation.kt
@@ -18,7 +18,7 @@ class CoilTrickplayTransformation(
     val index: Int,
 ) : Transformation() {
     private val x: Int = imageIndex % numColumns
-    private val y: Int = imageIndex / numRows
+    private val y: Int = imageIndex / numColumns
 
     override val cacheKey: String
         get() = "CoilTrickplayTransformation_$index,$x,$y"
diff --git a/app/src/main/java/com/github/damontecres/wholphin/ui/playback/SeekPreviewImage.kt b/app/src/main/java/com/github/damontecres/wholphin/ui/playback/SeekPreviewImage.kt
index 8be0b509..4d8ee0e5 100644
--- a/app/src/main/java/com/github/damontecres/wholphin/ui/playback/SeekPreviewImage.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/ui/playback/SeekPreviewImage.kt
@@ -107,7 +107,7 @@ fun SeekPreviewImage(
         val tileIndex =
             index % numberOfTilesPerImage // Index of tile within the current image
         val x = (tileIndex % trickPlayInfo.tileWidth) // x position within tile grid
-        val y = (tileIndex / trickPlayInfo.tileHeight) // y position
+        val y = (tileIndex / trickPlayInfo.tileWidth) // y position
         Box(
             modifier =
                 modifier