diff --git a/src/Tools/tim_tool/src/logic/tim.rs b/src/Tools/tim_tool/src/logic/tim.rs
index cfdb26c3..64ea2f1e 100644
--- a/src/Tools/tim_tool/src/logic/tim.rs
+++ b/src/Tools/tim_tool/src/logic/tim.rs
@@ -25,10 +25,6 @@ impl TIMInfo {
         let mut image_data      = SharedPixelBuffer::new(frame_info.width, frame_info.height);
         let mut dst_pixels      = image_data.make_mut_slice();
 
-        if bytes_per_pixel != 3 && bytes_per_pixel != 4 {
-            return Err(Error::from_text(format!("Image has {} bytes per pixel, but only 3 and 4 bytes per pixel are supported", bytes_per_pixel)));
-        }
-
         if info.color_type == png::ColorType::Indexed {
             let palette = info.palette.ok_or(Error::from_str("Found indexed PNG without palette"))?;
             let mut palette_colors = Vec::new();
@@ -54,8 +50,12 @@ impl TIMInfo {
             }
             Ok(TIMInfo{image_data, palette: Some(palette_colors)})
         }
-    
+
         else {
+            if bytes_per_pixel != 3 && bytes_per_pixel != 4 {
+                return Err(Error::from_text(format!("Image has {} bytes per pixel, but only 3 and 4 bytes per pixel are supported", bytes_per_pixel)));
+            }
+
             let mut byte_iter = buffer.iter();
             while let Some(color) = make_color(&mut byte_iter, bytes_per_pixel == 4) {
                 match bit_depth {