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-rw-r--r--crypto/asn1/t_pkey.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/asn1/t_pkey.c b/crypto/asn1/t_pkey.c
index 7a570ee823..3b2c9df891 100644
--- a/crypto/asn1/t_pkey.c
+++ b/crypto/asn1/t_pkey.c
@@ -18,7 +18,7 @@
/* Maximum indent */
#define ASN1_PRINT_MAX_INDENT 128
-int ASN1_buf_print(BIO *bp, unsigned char *buf, size_t buflen, int indent)
+int ASN1_buf_print(BIO *bp, const unsigned char *buf, size_t buflen, int indent)
{
size_t i;