diff --git a/.github/workflows/abi-checker.yml b/.github/workflows/abi-checker.yml
index 304db89cb..301d829a5 100644
--- a/.github/workflows/abi-checker.yml
+++ b/.github/workflows/abi-checker.yml
@@ -15,6 +15,8 @@ jobs:
     runs-on: ubuntu-latest
     name: "Run ABI checker on ubuntu-latest"
     steps:
+      - uses: suzuki-shunsuke/get-pr-action@v0.1.0
+        id: pr
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
@@ -81,7 +83,7 @@ jobs:
           chmod +x checker/check-abi
           echo "GITHUB_BASE_REF=$GITHUB_BASE_REF"
           echo "GITHUB_HEAD_REF=$GITHUB_HEAD_REF"
-          echo "API_BASE_REF=$API_BASE_REF"
+          echo "API_BASE_REF=${{ inputs.API_BASE_REF }}"
           echo "HEAD=$(git rev-parse HEAD)"
           echo "remotes=$(git remote -v)"