diff --git a/.github/workflows/benchmarks_run.yml b/.github/workflows/benchmarks_run.yml
index 67d7580..86c982b 100644
--- a/.github/workflows/benchmarks_run.yml
+++ b/.github/workflows/benchmarks_run.yml
@@ -12,9 +12,9 @@ jobs:
       - name: Checkout target branch
         uses: actions/checkout@v4
         with:
-          ref: github.base_ref
+          ref: ${github.base_ref}
           fetch-depth: 0
-          
+
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2