diff --git a/apps/frontend/src/components/ProductResults.jsx b/apps/frontend/src/components/ProductResults.jsx
index c7973d1..f1d98a0 100644
--- a/apps/frontend/src/components/ProductResults.jsx
+++ b/apps/frontend/src/components/ProductResults.jsx
@@ -39,7 +39,7 @@ function ProductResults({ products, onSelect }) {
     <div className="product-results">
       {products.map((product) => (
         <ProductCard
-          key={product.id}
+          key={product._id || product.id}
           product={product}
           onSelect={onSelect}
         />
diff --git a/apps/frontend/src/views/SearchView.jsx b/apps/frontend/src/views/SearchView.jsx
index f03e79d..43ca1ba 100644
--- a/apps/frontend/src/views/SearchView.jsx
+++ b/apps/frontend/src/views/SearchView.jsx
@@ -322,10 +322,11 @@ function SearchView({ currentUser, onLoginRequest, initialQuery = '', onNavigate
                 <ProductResults
                   products={products}
                   onSelect={(p) => {
+                    const productId = p._id || p.id;
                     if (onNavigateToProduct) {
-                      onNavigateToProduct(p.source, p.id);
+                      onNavigateToProduct(p.source, productId);
                     } else {
-                      window.location.href = `/product/${p.source}/${p.id}`;
+                      window.location.href = `/product/${p.source}/${productId}`;
                     }
                   }}
                 />