diff --git a/.github/actions/setup/macos/action.yml b/.github/actions/setup/macos/action.yml
index 5da7c6d44c..d0072ff828 100644
--- a/.github/actions/setup/macos/action.yml
+++ b/.github/actions/setup/macos/action.yml
@@ -21,7 +21,7 @@ runs:
         dir_config() {
           local args=() lib var="$1"; shift
           for lib in "$@"; do
-            args+="--with-${lib%@*}-dir=$(brew --prefix $lib)"
+            args+=("--with-${lib%@*}-dir=$(brew --prefix $lib)")
           done
           echo "$var=${args[*]}" >> $GITHUB_ENV
         }