diff --git a/src/include/daos_errno.h b/src/include/daos_errno.h
index d7decc6654d..87f7a474773 100644
--- a/src/include/daos_errno.h
+++ b/src/include/daos_errno.h
@@ -10,6 +10,8 @@
 #ifndef __DAOS_ERRNO_H__
 #define __DAOS_ERRNO_H__
 
+#include <stdint.h> /* just to trigger testing */
+
 #if defined(__cplusplus)
 extern "C" {
 #endif