diff --git a/sysdeps/openbsd/netload.c b/sysdeps/openbsd/netload.c
index 79c742b9..773d81c0 100644
--- a/sysdeps/openbsd/netload.c
+++ b/sysdeps/openbsd/netload.c
@@ -42,6 +42,7 @@
 
 #include <netinet/in.h>
 #include <netinet/in_var.h>
+#include <netinet6/in6_var.h>
 
 static const unsigned long _glibtop_sysdeps_netload =
 (1L << GLIBTOP_NETLOAD_IF_FLAGS) +