diff --git a/cz/src/common.rs b/cz/src/common.rs
index f5e2ccb..7f32e9c 100644
--- a/cz/src/common.rs
+++ b/cz/src/common.rs
@@ -408,9 +408,13 @@ pub fn indexed_gen_palette(
     input: &[u8],
     header: &CommonHeader,
 ) -> Result<(Vec<u8>, Vec<image::Rgba<u8>>), CzError> {
+    let size = (header.width() as u32 * header.height() as u32) * 4;
+
+    let mut buf = vec![0; size as usize];
+    buf[..input.len()].copy_from_slice(&input);
 
     let image = Image::new(
-        input,
+        &buf,
         header.width() as usize,
         header.height() as usize
     ).unwrap();
diff --git a/cz/src/dynamic.rs b/cz/src/dynamic.rs
index be9e622..918f983 100644
--- a/cz/src/dynamic.rs
+++ b/cz/src/dynamic.rs
@@ -71,7 +71,7 @@ impl DynamicCz {
         if bitmap.len() != image_size * (header_common.depth() >> 3) as usize {
             // If the bitmap is smaller or larger than the image size, it is likely wrong
             eprintln!("Image is wrong, length is {}, expected {}", bitmap.len(), image_size * (header_common.depth() >> 3) as usize);
-            //return Err(CzError::Corrupt);
+            return Err(CzError::Corrupt);
         }
 
         match header_common.depth() {
diff --git a/utils/src/main.rs b/utils/src/main.rs
index 5a8a5dc..b08144b 100644
--- a/utils/src/main.rs
+++ b/utils/src/main.rs
@@ -14,7 +14,8 @@ fn main() {
     let mut gallery_cz = DynamicCz::open("24.cz2").unwrap();
     gallery_cz.save_as_png("24.png").unwrap();
 
-    //gallery_cz.header_mut().set_depth(8);
+    gallery_cz.set_bitmap(new_bitmap.into_vec());
+    gallery_cz.header_mut().set_depth(8);
     gallery_cz.remove_palette();
     gallery_cz.header_mut().set_version(CzVersion::CZ2);
     gallery_cz.save_as_cz("24-modified.cz2").unwrap();