diff --git a/target-alpha/sys_helper.c b/target-alpha/sys_helper.c
index 035810c..5f7d7dd 100644
--- a/target-alpha/sys_helper.c
+++ b/target-alpha/sys_helper.c
@@ -69,7 +69,7 @@
 
 void helper_tbis(CPUAlphaState *env, uint64_t p)
 {
-    tlb_flush_page(env, p);
+    tlb_flush_page(CPU(alpha_env_get_cpu(env)), p);
 }
 
 void helper_tb_flush(CPUAlphaState *env)