diff --git a/src/fr/anssi/smartpgp/Constants.java b/src/fr/anssi/smartpgp/Constants.java
index 6a66b73..d03618a 100644
--- a/src/fr/anssi/smartpgp/Constants.java
+++ b/src/fr/anssi/smartpgp/Constants.java
@@ -67,9 +67,10 @@ public final class Constants {
     protected static final byte LANG_MAX_LENGTH = 8;
     protected static final byte[] LANG_DEFAULT = { (byte)0x65, (byte)0x6e };
 
+    protected static final byte SEX_NOT_KNOWN = (byte)0x30;
     protected static final byte SEX_MALE = (byte)0x31;
     protected static final byte SEX_FEMALE = (byte)0x32;
-    protected static final byte SEX_NOT_ANNOUNCED = (byte)0x39;
+    protected static final byte SEX_NOT_APPLICABLE = (byte)0x39;
 
     protected static final short TAG_AID = (short)0x004f;
     protected static final short TAG_LOGIN = (short)0x005e;
diff --git a/src/fr/anssi/smartpgp/Persistent.java b/src/fr/anssi/smartpgp/Persistent.java
index 3c42c71..e267366 100644
--- a/src/fr/anssi/smartpgp/Persistent.java
+++ b/src/fr/anssi/smartpgp/Persistent.java
@@ -179,7 +179,7 @@ public final class Persistent {
         lang_length = (byte)Constants.LANG_DEFAULT.length;
         Common.commitTransaction(isRegistering);
 
-        sex = Constants.SEX_NOT_ANNOUNCED;
+        sex = Constants.SEX_NOT_KNOWN;
 
         Util.arrayFillNonAtomic(digital_signature_counter, (short)0,
                                 (short)digital_signature_counter.length, (byte)0);
diff --git a/src/fr/anssi/smartpgp/SmartPGPApplet.java b/src/fr/anssi/smartpgp/SmartPGPApplet.java
index 0b5f85e..3e9961e 100644
--- a/src/fr/anssi/smartpgp/SmartPGPApplet.java
+++ b/src/fr/anssi/smartpgp/SmartPGPApplet.java
@@ -946,9 +946,10 @@ public final class SmartPGPApplet extends Applet {
                 }
 
                 switch(buf[0]) {
+                case Constants.SEX_NOT_KNOWN:
                 case Constants.SEX_MALE:
                 case Constants.SEX_FEMALE:
-                case Constants.SEX_NOT_ANNOUNCED:
+                case Constants.SEX_NOT_APPLICABLE:
                     data.sex = buf[0];
                     break;