diff --git a/internal_frontend/services/customers/usecases/validateCustomer.ts b/internal_frontend/services/customers/usecases/validateCustomer.ts
index 5de1984..abcd497 100644
--- a/internal_frontend/services/customers/usecases/validateCustomer.ts
+++ b/internal_frontend/services/customers/usecases/validateCustomer.ts
@@ -11,5 +11,9 @@ export async function validateCustomer(input: {
     zip: string;
     city: string;
 }): Promise<Customer[]> {
+    if (Object.values(input).every(value => !value?.trim())) {
+        return [];
+    }
+
     return await callApi<Customer[]>(customerRoutes.validate, "POST", input);
 }
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