diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a1384510718a942fef6e6b3b705b24554f99030b..a12d67a9e614ef37a536fb4460b916ea0ad376fa 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,8 +1,11 @@
 spec:
   inputs:
     os:
+      default: ''
     platform:
+      default: ''
     tagname:
+      default: ''
     cross_platform:
       default: 'no'
     build_flags: