1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/libcrypto/asn1/a_print.c b/src/lib/libcrypto/asn1/a_print.c
index 8035513f04..d18e772320 100644
--- a/src/lib/libcrypto/asn1/a_print.c
+++ b/src/lib/libcrypto/asn1/a_print.c
@@ -60,7 +60,7 @@
 #include "cryptlib.h"
 #include <openssl/asn1.h>
 
-int ASN1_PRINTABLE_type(unsigned char *s, int len)
+int ASN1_PRINTABLE_type(const unsigned char *s, int len)
         {
         int c;
         int ia5=0;