diff --git a/compiler/compiler.h b/compiler/compiler.h
index 07e2fd6..d688ead 100644
--- a/compiler/compiler.h
+++ b/compiler/compiler.h
@@ -41,7 +41,7 @@
 
   static Compiler* Create(CompilerDriver* driver, Kind kind);
 
-  virtual void Init() const = 0;
+  virtual void Init() = 0;
 
   virtual void UnInit() const = 0;