diff --git a/Errata.md b/Errata.md
index 1ac5ef24..533ece34 100644
--- a/Errata.md
+++ b/Errata.md
@@ -34,4 +34,5 @@ Zhou Jing | 18 | 911 | Change CommandLineRequiredAttribute to CommandLineSwitchR
 Zhou Jing | 18 | 902-903 | Change CommandLineAliasAttribute to CommandLineSwitchAliasAttribute
 Zhou Jing | 23 | 1105 | Change `Length = 10` in listing 23.20 to `Length = 12` to show entire output message
 Zhou Jing | 18 | 926-927 | Change 'LastName' references to be 'FirstName' in paragraphs
-Jinhang He | 5 | 255 | Edit listing 5.20 to used `image[index]` for the second print statement
\ No newline at end of file
+Jinhang He | 5 | 255 | Edit listing 5.20 to used `image[index]` for the second print statement
+Zhou Jing | 18 | 908 | Change comment in Listing 18.21 to "Restrict the attribute to properties and fields" from "Restrict the attribute to properties and methods"
\ No newline at end of file
diff --git a/src/Chapter18/Listing18.21.LimitingAnAttributesUsageWithAttributeUsageAttribute.cs b/src/Chapter18/Listing18.21.LimitingAnAttributesUsageWithAttributeUsageAttribute.cs
index e050de1f..6351524b 100644
--- a/src/Chapter18/Listing18.21.LimitingAnAttributesUsageWithAttributeUsageAttribute.cs
+++ b/src/Chapter18/Listing18.21.LimitingAnAttributesUsageWithAttributeUsageAttribute.cs
@@ -1,7 +1,7 @@
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter18.Listing18_21;
 
 #region INCLUDE
-// Restrict the attribute to properties and methods
+// Restrict the attribute to properties and fields
 #region HIGHLIGHT
 [AttributeUsage(
   AttributeTargets.Field | AttributeTargets.Property)]