diff --git a/action.yml b/action.yml
index a4e7a3d..ff70d5d 100644
--- a/action.yml
+++ b/action.yml
@@ -30,9 +30,7 @@ runs:
     - id: flags
       run: |
         : construct rustup command line
-        if [[ -z "$targets" ]]; then
-          targets="$target"
-        fi
+        if [[ -z "$targets" ]]; then targets=$target; fi
         echo "::set-output name=targets::$(for t in ${targets//,/ }; do echo -n ' --target' $t; done)"
         echo "::set-output name=components::$(for c in ${components//,/ }; do echo -n ' --component' $c; done)"
         echo "::set-output name=downgrade::${{inputs.toolchain == 'nightly' && inputs.components && ' --allow-downgrade' || ''}}"