diff --git a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/sched/core.c b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/sched/core.c
index 8835061ac4..2b50e4e3d1 100644
--- a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/sched/core.c
+++ b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/sched/core.c
@@ -30,6 +30,8 @@
 #include <../kernel/sched/sched.h>
 
 
+struct rq runqueues;
+
 /*
  * Type changes between kernel versions
  */