diff --git a/xbyak/xbyak.h b/xbyak/xbyak.h
index cfaea46..b1a40cd 100644
--- a/xbyak/xbyak.h
+++ b/xbyak/xbyak.h
@@ -741,7 +741,7 @@
 }
 
 // 2nd parameter for constructor of CodeArray(maxSize, userPtr, alloc)
-const void *const AutoGrow = (void*)1;
+void *const AutoGrow = (void*)1;
 
 class CodeArray {
 	enum Type {