diff --git a/slurm.conf b/slurm.conf
index e84d7a7..06539c9 100644
--- a/slurm.conf
+++ b/slurm.conf
@@ -31,7 +31,7 @@ CryptoType=crypto/munge
 #MaxJobCount=5000
 #MaxStepCount=40000
 #MaxTasksPerNode=128
-MpiDefault=none
+MpiDefault=pmix
 #MpiParams=ports=#-#
 #PluginDir=
 #PlugStackConfig=