diff --git a/crates/bevy_render/src/texture/ktx2.rs b/crates/bevy_render/src/texture/ktx2.rs
index 8318a6fad7..9e37c47175 100644
--- a/crates/bevy_render/src/texture/ktx2.rs
+++ b/crates/bevy_render/src/texture/ktx2.rs
@@ -90,14 +90,12 @@ pub fn ktx2_buffer_to_image(
                 TranscodeFormat::R8UnormSrgb => {
                     let (mut original_width, mut original_height) = (width, height);
 
-                    for level_data in &levels {
-                        transcoded.push(
-                            level_data
-                                .iter()
-                                .copied()
-                                .map(|v| (Srgba::gamma_function(v as f32 / 255.) * 255.).floor() as u8)
-                                .collect::<Vec<u8>>(),
-                        );
+                    for (level, level_data) in levels.iter().enumerate() {
+                        transcoded[level] = level_data
+                            .iter()
+                            .copied()
+                            .map(|v| (Srgba::gamma_function(v as f32 / 255.) * 255.).floor() as u8)
+                            .collect::<Vec<u8>>();
 
                         // Next mip dimensions are half the current, minimum 1x1
                         original_width = (original_width / 2).max(1);
@@ -109,14 +107,12 @@ pub fn ktx2_buffer_to_image(
                 TranscodeFormat::Rg8UnormSrgb => {
                     let (mut original_width, mut original_height) = (width, height);
 
-                    for level_data in &levels {
-                        transcoded.push(
-                            level_data
-                                .iter()
-                                .copied()
-                                .map(|v| (Srgba::gamma_function(v as f32 / 255.) * 255.).floor() as u8)
-                                .collect::<Vec<u8>>(),
-                        );
+                    for (level, level_data) in levels.iter().enumerate() {
+                        transcoded[level] = level_data
+                            .iter()
+                            .copied()
+                            .map(|v| (Srgba::gamma_function(v as f32 / 255.) * 255.).floor() as u8)
+                            .collect::<Vec<u8>>();
 
                         // Next mip dimensions are half the current, minimum 1x1
                         original_width = (original_width / 2).max(1);
@@ -1493,3 +1489,36 @@ pub fn ktx2_format_to_texture_format(
         }
     })
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::texture::CompressedImageFormats;
+
+    use super::ktx2_buffer_to_image;
+
+    #[test]
+    fn test_ktx_levels() {
+        // R8UnormSrgb textture with 4x4 pixels data and 3 levels of mipmaps
+        let buffer = vec![
+            0xab, 0x4b, 0x54, 0x58, 0x20, 0x32, 0x30, 0xbb, 0x0d, 10, 0x1a, 10, 0x0f, 0, 0, 0, 1,
+            0, 0, 0, 4, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 3, 0, 0, 0, 0, 0,
+            0, 0, 0x98, 0, 0, 0, 0x2c, 0, 0, 0, 0xc4, 0, 0, 0, 0x5c, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+            0, 0, 0, 0, 0, 0, 0, 0, 0, 0x28, 1, 0, 0, 0, 0, 0, 0, 0x10, 0, 0, 0, 0, 0, 0, 0, 0x10,
+            0, 0, 0, 0, 0, 0, 0, 0x24, 1, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0,
+            0, 0, 0, 0x20, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
+            0x2c, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0x28, 0, 1, 1, 2, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0,
+            0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0, 0, 0, 0x12, 0, 0, 0, 0x4b, 0x54, 0x58,
+            0x6f, 0x72, 0x69, 0x65, 0x6e, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0, 0x72, 0x64, 0, 0,
+            0, 0x10, 0, 0, 0, 0x4b, 0x54, 0x58, 0x73, 0x77, 0x69, 0x7a, 0x7a, 0x6c, 0x65, 0, 0x72,
+            0x72, 0x72, 0x31, 0, 0x2c, 0, 0, 0, 0x4b, 0x54, 0x58, 0x77, 0x72, 0x69, 0x74, 0x65,
+            0x72, 0, 0x74, 0x6f, 0x6b, 0x74, 0x78, 0x20, 0x76, 0x34, 0x2e, 0x33, 0x2e, 0x30, 0x7e,
+            0x32, 0x38, 0x20, 0x2f, 0x20, 0x6c, 0x69, 0x62, 0x6b, 0x74, 0x78, 0x20, 0x76, 0x34,
+            0x2e, 0x33, 0x2e, 0x30, 0x7e, 0x31, 0, 0x4a, 0, 0, 0, 0x4a, 0x4a, 0x4a, 0x4a, 0x4a,
+            0x4a, 0x4a, 0x4a, 0x4a, 0x4a, 0x4a, 0x4a, 0x4a, 0x4a, 0x4a, 0x4a, 0x4a, 0x4a, 0x4a,
+            0x4a,
+        ];
+        let supported_compressed_formats = CompressedImageFormats::empty();
+        let result = ktx2_buffer_to_image(&buffer, supported_compressed_formats, true);
+        assert!(result.is_ok());
+    }
+}