diff --git a/.github/workflows/goissue477.yml b/.github/workflows/goissue477.yml
index 6cb84e5..dd311d2 100644
--- a/.github/workflows/goissue477.yml
+++ b/.github/workflows/goissue477.yml
@@ -10,7 +10,7 @@ jobs:
     strategy:
       matrix:
         go: ['1.18'] 
-        os: ['macos']
+        os: ['darwin']
         arch: ['amd64']
     steps:
     - uses: actions/checkout@v4
@@ -19,7 +19,7 @@ jobs:
       with:
           go-version: ${{ matrix.go }}
     - name: 'Test on [darwin] arch [amd64]'
-      if: ${{ matrix.os == 'macos' && contains(fromJson('["amd64"]'), matrix.arch) }}
+      if: ${{ matrix.os == 'darwin' && contains(fromJson('["amd64"]'), matrix.arch) }}
       env:
           GOOS: ${{ matrix.os }}
           GOARCH: ${{ matrix.arch }}