diff --git a/.github/workflows/hello_world.yml b/.github/workflows/hello_world.yml
index 03b0222..ab8a9bc 100644
--- a/.github/workflows/hello_world.yml
+++ b/.github/workflows/hello_world.yml
@@ -10,7 +10,7 @@ on:
         default: "testing"
 jobs:
   test:
-    runs_on: ubuntu-latest
+    runs-on: ubuntu-latest
     steps:
       - run: >
           echo "Test ${{github.event.inputs.test}} ${{github.event.inputs.required_test}}"