diff --git a/bsd-user/freebsd/os-sys.c b/bsd-user/freebsd/os-sys.c
index c8f999f..2578645 100644
--- a/bsd-user/freebsd/os-sys.c
+++ b/bsd-user/freebsd/os-sys.c
@@ -130,7 +130,8 @@ abi_long do_freebsd_sysctl(CPUArchState *env, abi_ulong namep, int32_t namelen,
     abi_ulong oldlen = 0;
     int32_t *snamep = g_malloc(sizeof(int32_t) * namelen), *p, *q, i;
     uint32_t kind = 0;
-    TaskState *ts = (TaskState *)env->opaque;
+    CPUState *cpu = ENV_GET_CPU(env);
+    TaskState *ts = cpu->opaque;
 
     if (oldlenp) {
         if (get_user_ual(oldlen, oldlenp)) {