diff --git a/ompi/mca/btl/base/btl_base_select.c b/ompi/mca/btl/base/btl_base_select.c
index e3404ac995..a5e57c60d6 100644
--- a/ompi/mca/btl/base/btl_base_select.c
+++ b/ompi/mca/btl/base/btl_base_select.c
@@ -18,6 +18,7 @@
 
 #include "opal/util/argv.h"
 #include "opal/util/show_help.h"
+#include "opal/util/output.h"
 #include "opal/mca/mca.h"
 #include "opal/mca/base/base.h"
 #include "opal/mca/base/mca_base_component_repository.h"