diff --git a/src/main.c b/src/main.c
index 0330f6a..7e741de 100644
--- a/src/main.c
+++ b/src/main.c
@@ -797,6 +797,7 @@
 #ifdef FEAT_CRYPT
     if (params.ask_for_key)
     {
+	(void)blowfish_self_test();
 	(void)get_crypt_key(TRUE, TRUE);
 	TIME_MSG("getting crypt key");
     }