diff --git a/build-plugins/src/main/groovy/com/cloudogu/scm/GitHubUploadTask.groovy b/build-plugins/src/main/groovy/com/cloudogu/scm/GitHubUploadTask.groovy
index 6c5f82cde0..1f1cedfd35 100644
--- a/build-plugins/src/main/groovy/com/cloudogu/scm/GitHubUploadTask.groovy
+++ b/build-plugins/src/main/groovy/com/cloudogu/scm/GitHubUploadTask.groovy
@@ -61,6 +61,7 @@ class GitHubUploadTask extends UploadTask {
   private Author author = new Author()
 
   @Nested
+  @Optional
   private Author committer
 
   Author getAuthor() {