diff --git a/weblate_web/hetzner.py b/weblate_web/hetzner.py
index 19b72d181..275daa294 100644
--- a/weblate_web/hetzner.py
+++ b/weblate_web/hetzner.py
@@ -47,7 +47,7 @@ def generate_subaccount_data(
     dirname: str, service: Service, customer: Customer
 ) -> dict[str, str]:
     # Remove not allowed characters
-    customer_name = re.sub(r"[^\w,.&]+", " ", customer.name)
+    customer_name = re.sub(r"[^\w,.&-]+", " ", customer.name)
     return {
         "homedirectory": f"weblate/{dirname}",
         "ssh": "1",