diff --git a/crypto/pkcs7/pkcs7.h b/crypto/pkcs7/pkcs7.h
index f069527bad9d0bf63c553ab7b825b562a47553ff..c1f8e7db77c36f780896dbdc2dc396a1305f8935 100644
--- a/crypto/pkcs7/pkcs7.h
+++ b/crypto/pkcs7/pkcs7.h
@@ -384,6 +384,9 @@ PKCS7 *SMIME_read_PKCS7(BIO *bio, BIO **bcont);
 int SMIME_crlf_copy(BIO *in, BIO *out, int flags);
 int SMIME_text(BIO *in, BIO *out);
 
+BIO *BIO_new_PKCS7(BIO *out, PKCS7 *p7);
+
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.