diff --git a/src/util/sys_defs.h b/src/util/sys_defs.h
index 99bec9b..95c78ec 100644
--- a/src/util/sys_defs.h
+++ b/src/util/sys_defs.h
@@ -802,6 +803,7 @@ extern int initgroups(const char *, int);
 #define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6"
 #endif
 #endif
+#define HAS_CLOSEFROM
 #include <linux/version.h>
 #if !defined(KERNEL_VERSION)
 #define KERNEL_VERSION(a,b,c) (LINUX_VERSION_CODE + 1)