diff --git a/proto/region/vxmon_reg.h b/proto/region/vxmon_reg.h
index 3b058b4112969bdf99437d6c855149937a89b2ce..8e0f70fc87e8ea2783a4525c9afb7d459fd48865 100644
--- a/proto/region/vxmon_reg.h
+++ b/proto/region/vxmon_reg.h
@@ -1,9 +1,9 @@
 #pragma once
 
-struct vmxon_reg_t {
+struct vmxon_region_t {
     unsigned long size;
     void *va;
     void *pa;
 };
 
-int init_vmxon_reg(struct vmxon_reg_t *reg);
+int init_vmxon_reg(struct vmxon_region_t *reg);