diff --git a/opal/tools/wrappers/opal_wrapper.c b/opal/tools/wrappers/opal_wrapper.c
index 03722fb056..fbdacfc43e 100644
--- a/opal/tools/wrappers/opal_wrapper.c
+++ b/opal/tools/wrappers/opal_wrapper.c
@@ -26,6 +26,12 @@
 #ifdef HAVE_LIBGEN_H
 #include <libgen.h>
 #endif
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#endif
 
 #include "opal/runtime/opal.h"
 #include "opal/include/constants.h"