diff --git a/orte/mca/ns/base/ns_base_nds_bproc.c b/orte/mca/ns/base/ns_base_nds_bproc.c
index 5b8a325b64..32122b4b8e 100644
--- a/orte/mca/ns/base/ns_base_nds_bproc.c
+++ b/orte/mca/ns/base/ns_base_nds_bproc.c
@@ -20,6 +20,7 @@
 #include "include/orte_constants.h"
 #include "util/proc_info.h"
 #include "opal/util/opal_environ.h"
+#include "opal/util/output.h"
 #include "mca/base/mca_base_param.h"
 #include "mca/ns/ns.h"
 #include "mca/errmgr/errmgr.h"