diff --git a/src/libopensc/card-jcop.c b/src/libopensc/card-jcop.c
index c89bad34..3a93c8d7 100644
--- a/src/libopensc/card-jcop.c
+++ b/src/libopensc/card-jcop.c
@@ -914,9 +914,6 @@ static int jcop_card_ctl(sc_card_t *card, unsigned long cmd, void *ptr)
         case SC_CARDCTL_GET_DEFAULT_KEY:
                 return jcop_get_default_key(card,
                                 (struct sc_cardctl_default_key *) ptr);
-        case SC_CARDCTL_JCOP_LOCK:
-	     /* XXX implement me */
-	     return SC_ERROR_NOT_SUPPORTED;
         case SC_CARDCTL_JCOP_GENERATE_KEY:
                 return jcop_generate_key(card,
                                 (struct sc_cardctl_jcop_genkey *) ptr);
diff --git a/src/libopensc/cardctl.h b/src/libopensc/cardctl.h
index 8440a4f6..34ffa927 100644
--- a/src/libopensc/cardctl.h
+++ b/src/libopensc/cardctl.h
@@ -92,7 +92,6 @@ enum {
 	 * JCOP specific calls
 	 */
 	SC_CARDCTL_JCOP_BASE = _CTL_PREFIX('J', 'C', 'P'),
-	SC_CARDCTL_JCOP_LOCK,
 	SC_CARDCTL_JCOP_GENERATE_KEY,
 
 	/*