diff --git a/src/lib/AST/ASTVisitor.cpp b/src/lib/AST/ASTVisitor.cpp
index 2635ae4cb..5d0b5e80c 100644
--- a/src/lib/AST/ASTVisitor.cpp
+++ b/src/lib/AST/ASTVisitor.cpp
@@ -3206,7 +3206,7 @@ template<typename Derived>
 class TerminalTypeVisitor
     : public TypeVisitor<TerminalTypeVisitor<Derived>, bool>
 {
-    friend TypeVisitor;
+    friend TerminalTypeVisitor::TypeVisitor;
 
     ASTVisitor& Visitor_;