--- a/src/crypto/tls_openssl.c
+++ b/src/crypto/tls_openssl.c
@@ -103,8 +103,8 @@
 #endif /* OPENSSL_NEED_EAP_FAST_PRF */
 
 #endif
-
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#if (OPENSSL_VERSION_NUMBER < 0x10100000L || \
+     defined(LIBRESSL_VERSION_NUMBER))
 #ifdef CONFIG_SUITEB
 static int RSA_bits(const RSA *r)
 {