diff --git a/client/src/components/NewSaleForm.tsx b/client/src/components/NewSaleForm.tsx
index f470698..bdf4285 100644
--- a/client/src/components/NewSaleForm.tsx
+++ b/client/src/components/NewSaleForm.tsx
@@ -75,7 +75,8 @@ export default function NewSaleForm() {
       return response.json();
     },
     onSuccess: () => {
-      queryClient.invalidateQueries({ queryKey: ['/api/sales'] });
+      // Invalidate all sales queries to refresh the history
+      queryClient.invalidateQueries({ queryKey: ['/api/sales'], exact: false });
       toast({
         title: "Vente enregistrée",
         description: "La vente a été enregistrée avec succès",
diff --git a/client/src/components/SalesHistory.tsx b/client/src/components/SalesHistory.tsx
index 912b45f..e83f678 100644
--- a/client/src/components/SalesHistory.tsx
+++ b/client/src/components/SalesHistory.tsx
@@ -52,7 +52,8 @@ export default function SalesHistory({ canDelete = false }: SalesHistoryProps) {
     mutationFn: (saleId: number) =>
       apiRequest(`/api/sales/${saleId}`, { method: 'DELETE' }),
     onSuccess: () => {
-      queryClient.invalidateQueries({ queryKey: ['/api/sales'] });
+      // Invalidate all sales queries to refresh the history
+      queryClient.invalidateQueries({ queryKey: ['/api/sales'], exact: false });
       toast({
         title: "Vente supprimée",
         description: "La vente a été supprimée avec succès",
diff --git a/server/routes.ts b/server/routes.ts
index f46dad9..c7d34a1 100644
--- a/server/routes.ts
+++ b/server/routes.ts
@@ -149,9 +149,14 @@ export async function registerRoutes(app: Express): Promise<Server> {
       
       // Determine which store to query
       let targetStoreId: number;
-      if (user.role === 'admin' && storeId) {
-        // Admin can query any store
-        targetStoreId = parseInt(storeId as string);
+      if (user.role === 'admin') {
+        if (storeId) {
+          // Admin querying a specific store
+          targetStoreId = parseInt(storeId as string);
+        } else {
+          // Admin without specific store - should not happen with the new frontend
+          return res.status(400).json({ error: "Store ID required for admin queries" });
+        }
       } else {
         // Non-admin users can only query their own store
         if (!user.storeId) {