diff --git a/include/setproctitle.h b/include/setproctitle.h
index 43d856d2db..f61c036d58 100644
--- a/include/setproctitle.h
+++ b/include/setproctitle.h
@@ -20,6 +20,8 @@
 #ifndef ZABBIX_SETPROCTITLE_H
 #define ZABBIX_SETPROCTITLE_H
 
+#include "sysinc.h"
+
 #if defined(__linux__)				/* Linux */
 #       define PS_OVERWRITE_ARGV
 #elif defined(_AIX)				/* AIX */