diff --git a/src/report.hpp b/src/report.hpp
index 2fbd078..73d7f15 100644
--- a/src/report.hpp
+++ b/src/report.hpp
@@ -34,6 +34,10 @@
       public:
         OnChangeContext(Report& report) : report(report) {}
 
+        OnChangeContext(const OnChangeContext&) = delete;
+        OnChangeContext& operator=(const OnChangeContext&) = delete;
+        OnChangeContext(OnChangeContext&&) = delete;
+        OnChangeContext& operator=(OnChangeContext&&) = delete;
         ~OnChangeContext()
         {
             if (updated)