diff --git a/client/src/components/NewSaleForm.tsx b/client/src/components/NewSaleForm.tsx
index b1de788..a18c330 100644
--- a/client/src/components/NewSaleForm.tsx
+++ b/client/src/components/NewSaleForm.tsx
@@ -145,7 +145,7 @@ export default function NewSaleForm() {
         nom: data.nom,
         prenom: data.prenom,
         dateNaissance: data.dateNaissance,
-        lieuNaissance: data.lieuNaissance || undefined,
+        lieuNaissance: data.lieuNaissance,
         typeIdentite: data.typeIdentite,
         numeroIdentite: data.numeroIdentite,
         autoriteDelivrance: data.autoriteDelivrance,
@@ -369,7 +369,7 @@ export default function NewSaleForm() {
                   name="lieuNaissance"
                   render={({ field }) => (
                     <FormItem>
-                      <FormLabel>Lieu de naissance</FormLabel>
+                      <FormLabel>Lieu de naissance <span className="text-destructive">*</span></FormLabel>
                       <FormControl>
                         <Input placeholder="Ville de naissance" {...field} />
                       </FormControl>
diff --git a/client/src/lib/validation.ts b/client/src/lib/validation.ts
index d8f835b..54df74e 100644
--- a/client/src/lib/validation.ts
+++ b/client/src/lib/validation.ts
@@ -23,6 +23,7 @@ export function validateRequiredFields(formData: any): string[] {
     { key: 'nom', label: 'Nom' },
     { key: 'prenom', label: 'Prénom' },
     { key: 'dateNaissance', label: 'Date de naissance' },
+    { key: 'lieuNaissance', label: 'Lieu de naissance' },
     { key: 'modePaiement', label: 'Mode de paiement' },
     { key: 'typeIdentite', label: 'Type de pièce d\'identité' },
     { key: 'numeroIdentite', label: 'Numéro de pièce d\'identité' },
diff --git a/replit.md b/replit.md
index 0bd0797..2560d55 100644
--- a/replit.md
+++ b/replit.md
@@ -176,6 +176,7 @@ Preferred communication style: Simple, everyday language.
 - ✅ Improved admin interface - "Tous" displayed for admin store access, no redundant store selector for admin profiles
 - ✅ Cleaned up new sale page interface by removing unnecessary store information display
 - ✅ Streamlined dashboard layout for better user experience
+- ✅ Made "Lieu de naissance" field mandatory in new sale form for regulatory compliance
 
 ### Database Backup & Recovery System (January 9, 2025)
 - ✅ Added complete database backup and restore functionality in administration panel