diff --git a/components/eventtype/CreateEventType.tsx b/components/eventtype/CreateEventType.tsx
index dcb8b38c..9dc38cc6 100644
--- a/components/eventtype/CreateEventType.tsx
+++ b/components/eventtype/CreateEventType.tsx
@@ -195,6 +195,7 @@ export default function CreateEventTypeButton(props: Props) {
               <TextField
                 type="number"
                 required
+                min="10"
                 placeholder="15"
                 defaultValue={15}
                 label={t("length")}