diff --git a/src/dev/c0de/smartpgp/Constants.java b/src/dev/c0de/smartpgp/Constants.java
index dc8593d..8e0d5e4 100644
--- a/src/dev/c0de/smartpgp/Constants.java
+++ b/src/dev/c0de/smartpgp/Constants.java
@@ -170,7 +170,7 @@ public final class Constants {
                0x01), /* support KDF-DO */
         (byte)0x00, /* SM 0x01 = 128 bits, 0x02 = 256 bits, 0x03 = SCP11b */
         (byte)0x00, (byte)0x20, /* max length get challenge */
-        (byte)0x04, (byte)0x80, /* max length of carholder certificate */
+        (byte)0x04, (byte)0x80, /* max length of carholder certificate in Bytes (decimal: 1152) */
         (byte)0x00, (byte)0xff, /* max length of special DOs (private, login, url, KDF-DO) */
         (byte)0x00, /* PIN format 2 is not supported */
         (byte)0x00  /* MSE not supported */