diff --git a/test/datatype/position.c b/test/datatype/position.c
index f058426f7f..adcff436e8 100644
--- a/test/datatype/position.c
+++ b/test/datatype/position.c
@@ -13,6 +13,7 @@
 #include "ompi_config.h"
 #include "ompi/datatype/convertor.h"
 #include "ompi/datatype/datatype.h"
+#include "opal/util/output.h"
 
 /**
  * The purpose of this test is to simulate the multi-network packing and