diff --git a/.github/workflows/ompi_mpi4py.yaml b/.github/workflows/ompi_mpi4py.yaml
index 3bc950da5b8..665df68eaa7 100644
--- a/.github/workflows/ompi_mpi4py.yaml
+++ b/.github/workflows/ompi_mpi4py.yaml
@@ -76,7 +76,6 @@ jobs:
         mkdir -p "$(dirname "$mca_params")"
         echo mpi_param_check = true >> "$mca_params"
         echo mpi_show_handle_leaks = true >> "$mca_params"
-        echo rmaps_base_oversubscribe = true >> "$mca_params"
         mca_params="$HOME/.prte/mca-params.conf"
         mkdir -p "$(dirname "$mca_params")"
         echo rmaps_default_mapping_policy = :oversubscribe >> "$mca_params"