diff --git a/.github/workflows/compare_perf.yml b/.github/workflows/compare_perf.yml
index b6f900c4179c106859cd6dce103c5cc2aedd9b24..7ecdd784e8e5b3a9bcb1f64bdb60fbfabba6110b 100644
--- a/.github/workflows/compare_perf.yml
+++ b/.github/workflows/compare_perf.yml
@@ -21,5 +21,5 @@ jobs:
       with:
         clean: false
     - name: compare_perf::run_perf::echo_inputs
-      run: echo ${ inputs.base } ${ inputs.head }
+      run: echo ${{ inputs.base }} ${{ inputs.head }}
       shell: bash -euxo pipefail {0}