diff --git a/CppCoreGuidelines.md b/CppCoreGuidelines.md
index 847fbb7..e67c312 100644
--- a/CppCoreGuidelines.md
+++ b/CppCoreGuidelines.md
@@ -7656,14 +7656,14 @@ Convenience of use and avoidance of errors.
 
 ##### Example
 
-    enum Day { mon, tue, wed, thu, fri, sat, sun };
+    enum class Day { mon, tue, wed, thu, fri, sat, sun };
 
     Day operator++(Day& d)
     {
-        return d == sun ? mon : Day{++d};
+        return d == Day::sun ? Day::mon : Day{++d};
     }
 
-    Day today = sat;
+    Day today = Day::sat;
     Day tomorrow = ++today;
 
 ##### Enforcement