diff --git a/src/Chapter23/Listing23.02.TheVirtualAllocExAPI.cs b/src/Chapter23/Listing23.02.TheVirtualAllocExAPI.cs
index 2df714e10..ad0b7d7e2 100644
--- a/src/Chapter23/Listing23.02.TheVirtualAllocExAPI.cs
+++ b/src/Chapter23/Listing23.02.TheVirtualAllocExAPI.cs
@@ -17,6 +17,6 @@ LPVOID VirtualAllocEx(
                                 // is NULL, the function rounds dwSize
                                 // up to the next page boundary.
         DWORD flAllocationType, // The type of memory allocation
-        DWORD flProtect);       // The type of memory allocation
+        DWORD flProtect);       // The type of memory protection
     #endregion INCLUDE
 }
\ No newline at end of file