diff --git a/src/plugins/mpi/pmix/pmixp_common.h b/src/plugins/mpi/pmix/pmixp_common.h
index bc5c2cc03749daf6ae865bb10f03b9a5d26c1bb0..43a565b3b53004efabcd48818a4f8dd420b7edd6 100644
--- a/src/plugins/mpi/pmix/pmixp_common.h
+++ b/src/plugins/mpi/pmix/pmixp_common.h
@@ -79,7 +79,7 @@
 #define PMIXP_SLURM_MAPPING_ENV "SLURM_PMIX_MAPPING_SERV"
 /* Mode */
 #define PMIXP_TIMEOUT "SLURM_PMIX_TIMEOUT"
-#define PMIXP_TIMEOUT_DEFAULT 10
+#define PMIXP_TIMEOUT_DEFAULT 300
 #define PMIXP_TMPDIR_SRV "SLURM_PMIX_SRV_TMPDIR"
 #define PMIXP_TMPDIR_CLI "SLURM_PMIX_TMPDIR"
 #define PMIXP_TMPDIR_DEFAULT "/tmp/"