diff --git a/cast128-meta.c b/cast128-meta.c
index 5c15a08e467b0b194a1222465be327e020b9d54e..9c863d9627fafb6751477a2894a9d6ee9b795414 100644
--- a/cast128-meta.c
+++ b/cast128-meta.c
@@ -29,4 +29,4 @@
 #include "cast128.h"
 
 const struct nettle_cipher nettle_cast128
-= _NETTLE_CIPHER_FIX(cast128, CAST128, 128);
+= _NETTLE_CIPHER_FIX(cast128, CAST128);