diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 07a5e77d..58343b76 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -271,7 +271,7 @@ jobs:
         path: windows/inno/jack2-*.exe
 
   # ubuntu-20.04
-  ubuntu-20.04:
+  ubuntu_20_04:
     runs-on: ubuntu-20.04
     steps:
     - uses: actions/checkout@v2