diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 40829a7dcad09..8bef50335ae8a 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -30,12 +30,12 @@ env:
 jobs:
 
   complete:
-    name: AMD64 Ubuntu 22.04 Complete Documentation
+    name: AMD64 Ubuntu 20.04 Complete Documentation
     runs-on: ubuntu-latest
     if: ${{ !contains(github.event.pull_request.title, 'WIP') }}
     timeout-minutes: 150
     env:
-      UBUNTU: "22.04"
+      UBUNTU: "20.04"
     steps:
       - name: Checkout Arrow
         uses: actions/checkout@v3
diff --git a/ci/scripts/cpp_build.sh b/ci/scripts/cpp_build.sh
index c535def5cbbed..91a570be977a2 100755
--- a/ci/scripts/cpp_build.sh
+++ b/ci/scripts/cpp_build.sh
@@ -49,6 +49,7 @@ if [ "${GITHUB_ACTIONS:-false}" = "true" ]; then
       fi
       ;;
     *)
+      ;;
   esac
 fi