diff --git a/.github/workflows/a3.yml b/.github/workflows/a3.yml
index 696c312e66b..608144075c5 100644
--- a/.github/workflows/a3.yml
+++ b/.github/workflows/a3.yml
@@ -123,7 +123,7 @@ jobs:
       run: |
         set -x
         echo 'export PATH=/home/runner/openmpi/bin:$PATH' > .bashrc
-        echo $'alias mpiexec=\'mpiexec --oversubscrib\'' >> .bashrc
+        echo $'alias mpiexec=\'mpiexec --oversubscribe\'' >> .bashrc
         cat .bashrc
         source .bashrc
         export PATH="/home/runner/openmpi/bin:$PATH"