diff --git a/src/ssl_sock.c b/src/ssl_sock.c
index a0bea5955..813b59921 100644
--- a/src/ssl_sock.c
+++ b/src/ssl_sock.c
@@ -2607,6 +2607,8 @@ end:
         if (in)
                 BIO_free(in);
 
+	ERR_clear_error();
+
 	return dh;
 }