diff --git a/hs20/client/est.c b/hs20/client/est.c
index 97f913210..c3f27e1e9 100644
--- a/hs20/client/est.c
+++ b/hs20/client/est.c
@@ -17,9 +17,7 @@
 #include <openssl/x509.h>
 #include <openssl/x509v3.h>
 #include <openssl/opensslv.h>
-#ifdef OPENSSL_IS_BORINGSSL
-#include <openssl/buf.h>
-#endif /* OPENSSL_IS_BORINGSSL */
+#include <openssl/buffer.h>
 
 #include "common.h"
 #include "utils/base64.h"
@@ -220,9 +218,7 @@ typedef struct {
 	} d;
 } AttrOrOID;
 
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(OPENSSL_IS_BORINGSSL)
 DEFINE_STACK_OF(AttrOrOID)
-#endif
 
 typedef struct {
 	int type;
@@ -340,30 +336,13 @@ static void add_csrattrs(struct hs20_osu_client *ctx, CsrAttrs *csrattrs,
 	if (!csrattrs || ! csrattrs->attrs)
 		return;
 
-#ifdef OPENSSL_IS_BORINGSSL
-	num = sk_num(CHECKED_CAST(_STACK *, STACK_OF(AttrOrOID) *,
-				  csrattrs->attrs));
-	for (i = 0; i < num; i++) {
-		AttrOrOID *ao = sk_value(
-			CHECKED_CAST(_STACK *, const STACK_OF(AttrOrOID) *,
-				     csrattrs->attrs), i);
-		switch (ao->type) {
-		case 0:
-			add_csrattrs_oid(ctx, ao->d.oid, exts);
-			break;
-		case 1:
-			add_csrattrs_attr(ctx, ao->d.attribute, exts);
-			break;
-		}
-	}
-#else /* OPENSSL_IS_BORINGSSL */
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(OPENSSL_IS_BORINGSSL)
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
 	num = sk_AttrOrOID_num(csrattrs->attrs);
 #else
 	num = SKM_sk_num(AttrOrOID, csrattrs->attrs);
 #endif
 	for (i = 0; i < num; i++) {
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(OPENSSL_IS_BORINGSSL)
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
 		AttrOrOID *ao = sk_AttrOrOID_value(csrattrs->attrs, i);
 #else
 		AttrOrOID *ao = SKM_sk_value(AttrOrOID, csrattrs->attrs, i);
@@ -377,7 +356,6 @@ static void add_csrattrs(struct hs20_osu_client *ctx, CsrAttrs *csrattrs,
 			break;
 		}
 	}
-#endif /* OPENSSL_IS_BORINGSSL */
 }
 
 
diff --git a/src/crypto/tls_openssl_ocsp.c b/src/crypto/tls_openssl_ocsp.c
index 2e0334b64..4e4c2ac8e 100644
--- a/src/crypto/tls_openssl_ocsp.c
+++ b/src/crypto/tls_openssl_ocsp.c
@@ -216,13 +216,7 @@ ASN1_SEQUENCE(BasicOCSPResponse) = {
 
 IMPLEMENT_ASN1_FUNCTIONS(BasicOCSPResponse);
 
-#define sk_SingleResponse_num(sk) \
-sk_num(CHECKED_CAST(_STACK *, STACK_OF(SingleResponse) *, sk))
-
-#define sk_SingleResponse_value(sk, i) \
-	((SingleResponse *)						\
-	 sk_value(CHECKED_CAST(_STACK *, STACK_OF(SingleResponse) *, sk), (i)))
-
+DEFINE_STACK_OF(SingleResponse)
 
 static char * mem_bio_to_str(BIO *out)
 {
diff --git a/src/utils/http_curl.c b/src/utils/http_curl.c
index 30b07f23d..77d5b3578 100644
--- a/src/utils/http_curl.c
+++ b/src/utils/http_curl.c
@@ -433,28 +433,6 @@ ASN1_SEQUENCE(LogotypeExtn) = {
 
 IMPLEMENT_ASN1_FUNCTIONS(LogotypeExtn);
 
-#ifdef OPENSSL_IS_BORINGSSL
-#define sk_LogotypeInfo_num(st) \
-sk_num(CHECKED_CAST(_STACK *, STACK_OF(LogotypeInfo) *, (st)))
-#define sk_LogotypeInfo_value(st, i) (LogotypeInfo *) \
-sk_value(CHECKED_CAST(_STACK *, const STACK_OF(LogotypeInfo) *, (st)), (i))
-#define sk_LogotypeImage_num(st) \
-sk_num(CHECKED_CAST(_STACK *, STACK_OF(LogotypeImage) *, (st)))
-#define sk_LogotypeImage_value(st, i) (LogotypeImage *) \
-sk_value(CHECKED_CAST(_STACK *, const STACK_OF(LogotypeImage) *, (st)), (i))
-#define sk_LogotypeAudio_num(st) \
-sk_num(CHECKED_CAST(_STACK *, STACK_OF(LogotypeAudio) *, (st)))
-#define sk_LogotypeAudio_value(st, i) (LogotypeAudio *) \
-sk_value(CHECK_CAST(_STACK *, const STACK_OF(LogotypeAudio) *, (st)), (i))
-#define sk_HashAlgAndValue_num(st) \
-sk_num(CHECKED_CAST(_STACK *, STACK_OF(HashAlgAndValue) *, (st)))
-#define sk_HashAlgAndValue_value(st, i) (HashAlgAndValue *) \
-sk_value(CHECKED_CAST(_STACK *, const STACK_OF(HashAlgAndValue) *, (st)), (i))
-#define sk_ASN1_IA5STRING_num(st) \
-sk_num(CHECKED_CAST(_STACK *, STACK_OF(ASN1_IA5STRING) *, (st)))
-#define sk_ASN1_IA5STRING_value(st, i) (ASN1_IA5STRING *) \
-sk_value(CHECKED_CAST(_STACK *, const STACK_OF(ASN1_IA5STRING) *, (st)), (i))
-#else /* OPENSSL_IS_BORINGSSL */
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
 #define sk_LogotypeInfo_num(st) SKM_sk_num(LogotypeInfo, (st))
 #define sk_LogotypeInfo_value(st, i) SKM_sk_value(LogotypeInfo, (st), (i))
@@ -473,7 +451,6 @@ DEFINE_STACK_OF(LogotypeAudio)
 DEFINE_STACK_OF(HashAlgAndValue)
 DEFINE_STACK_OF(ASN1_IA5STRING)
 #endif
-#endif /* OPENSSL_IS_BORINGSSL */
 
 
 static void add_logo(struct http_ctx *ctx, struct http_cert *hcert,