diff --git a/app/pages/product/create.vue b/app/pages/product/create.vue
index 791dda5..3140cad 100644
--- a/app/pages/product/create.vue
+++ b/app/pages/product/create.vue
@@ -425,7 +425,11 @@ const buildPayload = () => {
 
   payload.constructeurIds = uniqueConstructeurIds(creationForm.constructeurIds)
 
-  const rawPrice = creationForm.supplierPrice.trim()
+  const rawPrice = typeof creationForm.supplierPrice === 'string'
+    ? creationForm.supplierPrice.trim()
+    : creationForm.supplierPrice === null || creationForm.supplierPrice === undefined
+      ? ''
+      : String(creationForm.supplierPrice).trim()
   if (rawPrice) {
     const parsed = Number(rawPrice)
     if (!Number.isNaN(parsed)) {