diff --git a/CppCoreGuidelines.md b/CppCoreGuidelines.md
index a33c79c..cc1ccd3 100644
--- a/CppCoreGuidelines.md
+++ b/CppCoreGuidelines.md
@@ -4221,7 +4221,7 @@ For example:
         // ...
     private:
         double magnitude;
-        double unit;    // 1 is meters, 1000 is kilometers, 0.0001 is millimeters, etc.
+        double unit;    // 1 is meters, 1000 is kilometers, 0.001 is millimeters, etc.
     };
 
 ##### Note