diff --git a/packages/web/src/components/chat/messageMenuItems.tsx b/packages/web/src/components/chat/messageMenuItems.tsx
index c9523f3b..1e5e233e 100644
--- a/packages/web/src/components/chat/messageMenuItems.tsx
+++ b/packages/web/src/components/chat/messageMenuItems.tsx
@@ -73,19 +73,21 @@ export function buildMessageMenuItems(params: MessageMenuParams): ContextMenuIte
         copyImageToClipboard(imageUrl);
       },
     });
-    items.push({
-      key: 'open-original',
-      type: 'action',
-      label: 'Open Original',
-      icon: (
-        <svg width="16" height="16" viewBox="0 0 24 24" fill="currentColor">
-          <path d="M19 19H5V5h7V3H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2v-7h-2v7zM14 3v2h3.59l-9.83 9.83 1.41 1.41L19 6.41V10h2V3h-7z" />
-        </svg>
-      ),
-      onClick: () => {
-        window.open(imageUrl, '_blank', 'noopener');
-      },
-    });
+    if (!sourceUrl) {
+      items.push({
+        key: 'open-original',
+        type: 'action',
+        label: 'Open Original',
+        icon: (
+          <svg width="16" height="16" viewBox="0 0 24 24" fill="currentColor">
+            <path d="M19 19H5V5h7V3H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2v-7h-2v7zM14 3v2h3.59l-9.83 9.83 1.41 1.41L19 6.41V10h2V3h-7z" />
+          </svg>
+        ),
+        onClick: () => {
+          window.open(imageUrl, '_blank', 'noopener');
+        },
+      });
+    }
     items.push({ key: 'image-sep', type: 'separator' });
   }