diff --git a/src/AST/ASTVisitor.cs b/src/AST/ASTVisitor.cs
index 68f9c9d5..c6082653 100644
--- a/src/AST/ASTVisitor.cs
+++ b/src/AST/ASTVisitor.cs
@@ -1,5 +1,4 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 
 namespace CppSharp.AST
 {