diff --git a/src/libopensc/errors.h b/src/libopensc/errors.h
index cf9c2298..8fe372da 100644
--- a/src/libopensc/errors.h
+++ b/src/libopensc/errors.h
@@ -69,6 +69,7 @@
 #define SC_ERROR_OBJECT_NOT_VALID		-1406
 #define SC_ERROR_OBJECT_NOT_FOUND		-1407
 #define SC_ERROR_NOT_SUPPORTED			-1408
+#define SC_ERROR_PASSPHRASE_REQUIRED		-1409
 
 /* Relating to PKCS #15 init stuff */
 #define SC_ERROR_PKCS15INIT			-1500