diff --git a/src/sslhelper.c b/src/sslhelper.c
index 04c2e27..fb9daa6 100644
--- a/src/sslhelper.c
+++ b/src/sslhelper.c
@@ -803,7 +803,7 @@ static int pem_passwd_callback(char *buf, int size, int rwflag,
 static int crl_callback(X509_STORE_CTX *callback_ctx) {
 	const ASN1_INTEGER *revoked_serial;
 	X509_STORE_CTX *store_ctx;
-#if OPENSSL_VERSION_NUMBER > 0x10100000L
+#if OPENSSL_VERSION_NUMBER > 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
 	X509_OBJECT *obj;
 #else
 	X509_OBJECT obj;
@@ -829,7 +829,7 @@ static int crl_callback(X509_STORE_CTX *callback_ctx) {
 	* the current certificate in order to verify it's integrity. */
 	store_ctx = X509_STORE_CTX_new();
 	X509_STORE_CTX_init(store_ctx, revocation_store, NULL, NULL);
-#if OPENSSL_VERSION_NUMBER > 0x10100000L
+#if OPENSSL_VERSION_NUMBER > 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
 	obj = X509_OBJECT_new();
 	rc=X509_STORE_get_by_subject(store_ctx, X509_LU_CRL, subject, obj);
 	crl = X509_OBJECT_get0_X509_CRL(obj);
@@ -865,7 +865,7 @@ static int crl_callback(X509_STORE_CTX *callback_ctx) {
 			rfbLog("Invalid signature on CRL\n");
 			X509_STORE_CTX_set_error(callback_ctx,
 				X509_V_ERR_CRL_SIGNATURE_FAILURE);
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
 			X509_OBJECT_free(obj);
 #else
 			X509_OBJECT_free_contents(&obj);
@@ -883,7 +883,7 @@ static int crl_callback(X509_STORE_CTX *callback_ctx) {
 			rfbLog("Found CRL has invalid nextUpdate field\n");
 			X509_STORE_CTX_set_error(callback_ctx,
 				X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD);
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
 			X509_OBJECT_free(obj);
 #else
 			X509_OBJECT_free_contents(&obj);
@@ -894,14 +894,14 @@ static int crl_callback(X509_STORE_CTX *callback_ctx) {
 			rfbLog("Found CRL is expired - "
 				"revoking all certificates until you get updated CRL\n");
 			X509_STORE_CTX_set_error(callback_ctx, X509_V_ERR_CRL_HAS_EXPIRED);
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
 			X509_OBJECT_free(obj);
 #else
 			X509_OBJECT_free_contents(&obj);
 #endif
 			return 0; /* Reject connection */
 		}
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
 			X509_OBJECT_free(obj);
 #else
 			X509_OBJECT_free_contents(&obj);
@@ -912,7 +912,7 @@ static int crl_callback(X509_STORE_CTX *callback_ctx) {
 	 * the current certificate in order to check for revocation. */
 	store_ctx = X509_STORE_CTX_new();
 	X509_STORE_CTX_init(store_ctx, revocation_store, NULL, NULL);
-#if OPENSSL_VERSION_NUMBER > 0x10100000L
+#if OPENSSL_VERSION_NUMBER > 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
 	obj = X509_OBJECT_new();
 	rc=X509_STORE_get_by_subject(store_ctx, X509_LU_CRL, issuer, obj);
 	crl = X509_OBJECT_get0_X509_CRL(obj);
@@ -942,7 +942,7 @@ static int crl_callback(X509_STORE_CTX *callback_ctx) {
 					"revoked per CRL from issuer %s\n", serial, serial, cp);
 				OPENSSL_free(cp);
 				X509_STORE_CTX_set_error(callback_ctx, X509_V_ERR_CERT_REVOKED);
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
 				X509_OBJECT_free(obj);
 #else
 				X509_OBJECT_free_contents(&obj);
@@ -950,7 +950,7 @@ static int crl_callback(X509_STORE_CTX *callback_ctx) {
 				return 0; /* Reject connection */
 			}
 		}
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
 			X509_OBJECT_free(obj);
 #else
 			X509_OBJECT_free_contents(&obj);
@@ -1596,7 +1596,7 @@ static int switch_to_anon_dh(void) {
 	if (ssl_client_mode) {
 		return 1;
 	}
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
 	/* Security level must be set to 0 for unauthenticated suites. */
 	SSL_CTX_set_security_level(ctx, 0);
 #endif