1 files changed, 1 insertions, 2 deletions

diff --git a/src/lib/libcrypto/cast/c_ofb64.c b/src/lib/libcrypto/cast/c_ofb64.c
index fd0469a62f..cb3222456c 100644
--- a/src/lib/libcrypto/cast/c_ofb64.c
+++ b/src/lib/libcrypto/cast/c_ofb64.c
@@ -64,7 +64,7 @@
  * 64bit block we have used is contained in *num;
  */
 void CAST_ofb64_encrypt(const unsigned char *in, unsigned char *out,
-                        long length, CAST_KEY *schedule, unsigned char *ivec,
+                        long length, const CAST_KEY *schedule, unsigned char *ivec,
                         int *num)
         {
         register CAST_LONG v0,v1,t;
@@ -108,4 +108,3 @@ void CAST_ofb64_encrypt(const unsigned char *in, unsigned char *out,
         t=v0=v1=ti[0]=ti[1]=0;
         *num=n;
         }
-