1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/libcrypto/asn1/asn1.h b/src/lib/libcrypto/asn1/asn1.h
index f7718b5a94..59540e4e79 100644
--- a/src/lib/libcrypto/asn1/asn1.h
+++ b/src/lib/libcrypto/asn1/asn1.h
@@ -1067,7 +1067,7 @@ ASN1_STRING *ASN1_pack_string(void *obj, i2d_of_void *i2d,
 ASN1_STRING *ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_OCTET_STRING **oct);
 
 void ASN1_STRING_set_default_mask(unsigned long mask);
-int ASN1_STRING_set_default_mask_asc(char *p);
+int ASN1_STRING_set_default_mask_asc(const char *p);
 unsigned long ASN1_STRING_get_default_mask(void);
 int ASN1_mbstring_copy(ASN1_STRING **out, const unsigned char *in, int len,
                                         int inform, unsigned long mask);