diff --git a/Applet/src/com/android/javacard/keymaster/KMKeymasterApplet.java b/Applet/src/com/android/javacard/keymaster/KMKeymasterApplet.java
index 19eb1ab3..9f09643f 100644
--- a/Applet/src/com/android/javacard/keymaster/KMKeymasterApplet.java
+++ b/Applet/src/com/android/javacard/keymaster/KMKeymasterApplet.java
@@ -182,6 +182,10 @@ public class KMKeymasterApplet extends Applet implements AppletEvent, ExtendedLe
   public static final byte INS_GET_RESPONSE_CMD = KEYMINT_CMD_APDU_START + 34; //0x42
   private static final byte KEYMINT_CMD_APDU_END = KEYMINT_CMD_APDU_START + 35; //0x43
   private static final byte INS_END_KM_CMD = 0x7F;
+  // Instruction values from 0xCD to 0xFF are completely reserved for Vendors to use and
+  // will never be used by the base line code in future.
+  private static final byte INS_KM_VENDOR_START_CMD = 0xCD;
+  private static final byte INS_KM_VENDOR_END_CMD = 0xFF;
 
   // Data Dictionary items
   public static final byte DATA_ARRAY_SIZE = 40;