diff --git a/.github/workflows/reusable-ubuntu-ci.yml b/.github/workflows/reusable-ubuntu-ci.yml
index 989fbdf5..3ac06e06 100644
--- a/.github/workflows/reusable-ubuntu-ci.yml
+++ b/.github/workflows/reusable-ubuntu-ci.yml
@@ -54,6 +54,8 @@ on:
         required: false
         type: boolean
         default: false
+env:
+    cdr-test-flag: ${{ inputs.fastcdr-branch == '1.1.x' &&  '-Dcdr_version=v1' || (inputs.fastcdr-branch == '2.x' &&  '-Dcdr_version=v2' || '-Dcdr_version=both' )}}
 defaults:
   run:
     shell: bash
@@ -211,4 +213,4 @@ jobs:
         run: |
           source ${{ github.workspace }}/install/local_setup.bash
           cd ${{ github.workspace }}/src/fastddsgen
-          ./gradlew test
+          ./gradlew test ${{ env.cdr-test-flag }}