diff --git a/zfs/lib/libspl/include/sys/zfs_context.h b/zfs/lib/libspl/include/sys/zfs_context.h
index 6c3fb41c93..0328e22eb9 100644
--- a/zfs/lib/libspl/include/sys/zfs_context.h
+++ b/zfs/lib/libspl/include/sys/zfs_context.h
@@ -71,6 +71,7 @@ extern "C" {
 #include <sys/sdt.h>
 #include <sys/kstat.h>
 #include <sys/u8_textprep.h>
+#include <sys/va_list.h>
 #include <sys/sysevent/eventdefs.h>
 
 /*