diff --git a/.github/actions/build-docs/action.yml b/.github/actions/build-docs/action.yml
index f0c65dc..a434e2a 100644
--- a/.github/actions/build-docs/action.yml
+++ b/.github/actions/build-docs/action.yml
@@ -28,7 +28,7 @@ runs:
       shell: bash
       run: |
         echo ::group::Build Docs
-        OUTPUT_DIR=$(build-docs ${{ inputs.asdf-system }})
+        OUTPUT_DIR=`build-docs ${{ inputs.asdf-system }}`
         
         echo "::set-output name=build-dir::${OUTPUT_DIR}"
         echo ::endgroup::