1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/libcrypto/evp/p_verify.c b/src/lib/libcrypto/evp/p_verify.c
index d854d743a5..21a40a375e 100644
--- a/src/lib/libcrypto/evp/p_verify.c
+++ b/src/lib/libcrypto/evp/p_verify.c
@@ -62,7 +62,7 @@
 #include <openssl/objects.h>
 #include <openssl/x509.h>
 
-int EVP_VerifyFinal(EVP_MD_CTX *ctx, unsigned char *sigbuf,
+int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf,
              unsigned int siglen, EVP_PKEY *pkey)
         {
         unsigned char m[EVP_MAX_MD_SIZE];