1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/libcrypto/bf/bf_ofb64.c b/src/lib/libcrypto/bf/bf_ofb64.c
index 8ceb8d9bda..f2a9ff6e41 100644
--- a/src/lib/libcrypto/bf/bf_ofb64.c
+++ b/src/lib/libcrypto/bf/bf_ofb64.c
@@ -63,8 +63,8 @@
  * used.  The extra state information to record how much of the
  * 64bit block we have used is contained in *num;
  */
-void BF_ofb64_encrypt(unsigned char *in, unsigned char *out, long length,
-             BF_KEY *schedule, unsigned char *ivec, int *num)
+void BF_ofb64_encrypt(const unsigned char *in, unsigned char *out, long length,
+             const BF_KEY *schedule, unsigned char *ivec, int *num)
         {
         register BF_LONG v0,v1,t;
         register int n= *num;