diff --git a/ssl/tls_method.cc b/ssl/tls_method.cc
index 95fac4d..a642e75 100644
--- a/ssl/tls_method.cc
+++ b/ssl/tls_method.cc
@@ -59,7 +59,7 @@
 #include <assert.h>
 #include <string.h>
 
-#include <openssl/buf.h>
+#include <openssl/err.h>
 
 #include "../crypto/internal.h"
 #include "internal.h"