diff --git a/tools/kwbimage.c b/tools/kwbimage.c
index edef560..5830549 100644
--- a/tools/kwbimage.c
+++ b/tools/kwbimage.c
@@ -24,7 +24,7 @@
 #include <openssl/err.h>
 #include <openssl/evp.h>
 
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
 static void RSA_get0_key(const RSA *r,
                  const BIGNUM **n, const BIGNUM **e, const BIGNUM **d)
 {