diff --git a/ConvertBitMap.playground/Sources/Converter.swift b/ConvertBitMap.playground/Sources/Converter.swift
index 8c33bcb..3bd35a5 100644
--- a/ConvertBitMap.playground/Sources/Converter.swift
+++ b/ConvertBitMap.playground/Sources/Converter.swift
@@ -2,7 +2,7 @@ import AppKit
 import MetalKit
 
 /*
- Loads an unpacked Apple IIGS graphic ($C0/$0000) and make available
+ Loads an unpacked Apple IIGS graphic ($C1/$0000) and make available
  the generated macOS bit map.
  */
 public class Converter {
diff --git a/Readme.md b/Readme.md
index 47d6811..41aa8a3 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,6 +1,6 @@
 A simple Playground demonstration on how to 
 
-a) load an Apple IIGS graphic file with a file type and auxiliary type of $C0 and $0000,
+a) load an Apple IIGS graphic file with a file type and auxiliary type of $C1 and $0000,
 
 b) extract data from the loaded file and use the information to instantiate a raw bitmap which can be used by macOS to create a CGImage object,