diff --git a/.github/actions/fetch-fastddsgen-repos/action.yml b/.github/actions/fetch-fastddsgen-repos/action.yml
index 0ca25907..f94fd35e 100644
--- a/.github/actions/fetch-fastddsgen-repos/action.yml
+++ b/.github/actions/fetch-fastddsgen-repos/action.yml
@@ -3,16 +3,13 @@ description: 'Fetch Fast DDS dependencies'
 inputs:
   foonathan-memory-vendor-branch:
     description: 'foonathan_memory_vendor branch to be used'
-    required: false
-    default: 'master'
+    required: true
   fastcdr-branch:
     description: 'Fast-CDR branch to be used'
-    required: false
-    default: 'master'
+    required: true
   fastdds-branch:
     description: 'Fast-DDS branch to be used'
-    required: false
-    default: 'master'
+    required: true
 runs:
   using: "composite"
   steps:
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index c44c36de..170a814e 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -42,9 +42,9 @@ jobs:
       - uses: ./src/fastddsgen/.github/actions/install-python-packages
       - uses: ./src/fastddsgen/.github/actions/fetch-fastddsgen-repos
         with:
-          foonathan-memory-vendor-branch: '${{ github.event.inputs.foonathan_memory_vendor_branch }}'
-          fastcdr-branch: '${{ github.event.inputs.fastcdr_branch }}'
-          fastdds-branch: '${{ github.event.inputs.fastdds_branch }}'
+          foonathan-memory-vendor-branch: ${{ github.event.inputs.foonathan_memory_vendor_branch || 'master' }}
+          fastcdr-branch: ${{ github.event.inputs.fastcdr_branch || 'master' }}
+          fastdds-branch: ${{ github.event.inputs.fastdds_branch || 'master' }}
 
       - name: Get minimum supported version of CMake
         uses: lukka/get-cmake@latest