diff --git a/src/components/images/ImageCard.tsx b/src/components/images/ImageCard.tsx
index e9fd750..1229b9a 100644
--- a/src/components/images/ImageCard.tsx
+++ b/src/components/images/ImageCard.tsx
@@ -111,11 +111,11 @@ export function ImageCard({
         className="relative h-40 bg-slate-800 cursor-pointer"
         onClick={() => onOpenLightbox(item)}
       >
-        <div className="absolute inset-0">
+        <div className={`absolute top-0 bottom-0 left-0 overflow-hidden ${item.processedBlob ? 'w-1/2' : 'w-full'}`}>
           <BlobThumbnail blob={item.originalBlob} alt="Original" />
         </div>
         {item.processedBlob && (
-          <div className="absolute top-0 bottom-0 right-0 w-1/2 border-l-2 border-indigo-500">
+          <div className="absolute top-0 bottom-0 right-0 w-1/2 overflow-hidden border-l-2 border-indigo-500">
             <BlobThumbnail blob={item.processedBlob} alt="Traité" />
           </div>
         )}