diff --git a/CppCoreGuidelines.md b/CppCoreGuidelines.md
index 5ea72070c..cea0b5cc6 100644
--- a/CppCoreGuidelines.md
+++ b/CppCoreGuidelines.md
@@ -5799,7 +5799,7 @@ Using default member initializers lets the compiler generate the function for yo
 
 ##### Enforcement
 
-(Simple) A default constructor should do more than just initialize data members with constants.
+(Simple) A user-defined non-defaulted default constructor should do more than just initialize data members with constants.
 
 ### <a name="Rc-explicit"></a>C.46: By default, declare single-argument constructors explicit