diff --git a/src/kernel/ExecRequest.h b/src/kernel/ExecRequest.h
index fd2f45bc93..b14d0f0971 100644
--- a/src/kernel/ExecRequest.h
+++ b/src/kernel/ExecRequest.h
@@ -19,6 +19,7 @@
 #ifndef _EXECREQUEST_H_
 #define _EXECREQUEST_H_
 
+#include <errno.h>
 #include "SubTask.h"
 #include "Executor.h"