diff --git a/.github/workflows/voms-aa.ci.yml b/.github/workflows/voms-aa.ci.yml
index dcd4462..590aed0 100644
--- a/.github/workflows/voms-aa.ci.yml
+++ b/.github/workflows/voms-aa.ci.yml
@@ -107,7 +107,7 @@ jobs:
     continue-on-error: true
       
     env:
-      ROBOT_OPTIONS: --variable vo1:vo.2 --variable vo1_host:voms-aa.test.example --variable vo1_issuer:/C=IT/O=IGI/CN=*.test.example --variable --variable vo2:vo.1 --variable vo2_host:voms.test.example --variable vo2_issuer:/C=IT/O=IGI/CN=*.test.example --exclude issue-723 --exclude issue-724 --exclude issue-726
+      ROBOT_OPTIONS: --variable vo1:vo.2 --variable vo1_host:voms-aa.test.example --variable vo1_issuer:'/C=IT/O=IGI/CN=*.test.example' --variable vo2:vo.1 --variable vo2_host:voms.test.example --variable vo2_issuer:'/C=IT/O=IGI/CN=*.test.example' --exclude issue-723 --exclude issue-724 --exclude issue-726
       
     steps:
     - name: Checkout