diff --git a/include/proto/connection.h b/include/proto/connection.h
index 2380bb8..235671e 100644
--- a/include/proto/connection.h
+++ b/include/proto/connection.h
@@ -502,6 +502,10 @@
 	conn->target = NULL;
 	conn->proxy_netns = NULL;
 	LIST_INIT(&conn->list);
+
+#if OPENSSL_VERSION_NUMBER >= 0x1010000fL
+	conn->async_fd = -1;
+#endif
 }
 
 /* Tries to allocate a new connection and initialized its main fields. The