diff --git a/codecs/rotate/rotate.rs b/codecs/rotate/rotate.rs
index ccac2ef2..645e1784 100644
--- a/codecs/rotate/rotate.rs
+++ b/codecs/rotate/rotate.rs
@@ -22,8 +22,8 @@ fn rotate(width: usize, height: usize, _rotate: usize) {
     let in_b: &mut [u32];
     let out_b: &mut [u32];
     unsafe {
-        in_b = from_raw_parts_mut::<u32>(4 as *mut u32, num_pixels);
-        out_b = from_raw_parts_mut::<u32>((num_pixels * 4 + 4) as *mut u32, num_pixels);
+        in_b = from_raw_parts_mut::<u32>(8 as *mut u32, num_pixels);
+        out_b = from_raw_parts_mut::<u32>((num_pixels * 4 + 8) as *mut u32, num_pixels);
     }
 
     let new_width = height;
diff --git a/codecs/rotate/rotate.wasm b/codecs/rotate/rotate.wasm
index 4ff66649..92547dc9 100755
Binary files a/codecs/rotate/rotate.wasm and b/codecs/rotate/rotate.wasm differ
diff --git a/src/codecs/rotate/processor.ts b/src/codecs/rotate/processor.ts
index 30bac75c..d880ac97 100644
--- a/src/codecs/rotate/processor.ts
+++ b/src/codecs/rotate/processor.ts
@@ -11,7 +11,7 @@ export async function rotate(
 
   // Number of wasm memory pages (á 64KiB) needed to store the image twice.
   const bytesPerImage = data.width * data.height * 4;
-  const numPagesNeeded = Math.ceil((bytesPerImage * 2 + 4) / (64 * 1024));
+  const numPagesNeeded = Math.ceil((bytesPerImage * 2 + 8) / (64 * 1024));
   // Only count full pages, just to be safe.
   const numPagesAvailable = Math.floor(instance.exports.memory.buffer.byteLength / (64 * 1024));
   const additionalPagesToAllocate = numPagesNeeded - numPagesAvailable;
@@ -20,13 +20,13 @@ export async function rotate(
     instance.exports.memory.grow(additionalPagesToAllocate);
   }
   const view = new Uint8ClampedArray(instance.exports.memory.buffer);
-  view.set(data.data, 4);
+  view.set(data.data, 8);
 
   instance.exports.rotate(data.width, data.height, opts.rotate);
 
   const flipDimensions = opts.rotate % 180 !== 0;
   return new ImageData(
-    view.slice(bytesPerImage + 4, bytesPerImage * 2 + 4),
+    view.slice(bytesPerImage + 8, bytesPerImage * 2 + 8),
     flipDimensions ? data.height : data.width,
     flipDimensions ? data.width : data.height,
   );