diff --git a/crypto/asn1/a_verify.c b/crypto/asn1/a_verify.c

index 376b359..1d42c2c 100644

--- a/crypto/asn1/a_verify.c

+++ b/crypto/asn1/a_verify.c

@@ -7,9 +7,6 @@

  * https://www.openssl.org/source/license.html

  */

-/* for secure_getenv */

-#define _GNU_SOURCE

-

 #include <stdio.h>

 #include <time.h>

 #include <sys/types.h>

@@ -130,7 +127,7 @@ int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *a,

             goto err;

         ret = -1;

     } else if ((mdnid == NID_md5

-               && secure_getenv("OPENSSL_ENABLE_MD5_VERIFY") == NULL) ||

+               && getenv("OPENSSL_ENABLE_MD5_VERIFY") == NULL) ||

                mdnid == NID_md4 || mdnid == NID_md2 || mdnid == NID_sha) {

         ASN1err(ASN1_F_ASN1_ITEM_VERIFY,

                 ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);