diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangDiagnostic.h b/lldb/source/Plugins/ExpressionParser/Clang/ClangDiagnostic.h
index db50c2aa3e90..4db1ba096fa8 100644
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangDiagnostic.h
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangDiagnostic.h
@@ -42,6 +42,7 @@ public:
   }
 
   const FixItList &FixIts() const { return m_fixit_vec; }
+private:
   FixItList m_fixit_vec;
 };