diff --git a/.gitea/workflows/maven-release.yml b/.gitea/workflows/maven-release.yml
index 353f0b3..778a072 100644
--- a/.gitea/workflows/maven-release.yml
+++ b/.gitea/workflows/maven-release.yml
@@ -21,8 +21,8 @@ on:
       build-docker:
         description: "Costruisce e pubblica l'immagine Docker (jib). false per librerie jar-only."
         required: false
-        type: boolean
-        default: true
+        type: string
+        default: "true"
 
 jobs:
   release: