diff --git a/src/stream-ws.c b/src/stream-ws.c
index 2e178ed..8dc6229 100644
--- a/src/stream-ws.c
+++ b/src/stream-ws.c
@@ -300,7 +300,7 @@ static struct stream_impl impl = {
 
 struct stream* stream_ws_new(int fd, stream_event_fn on_event, void* userdata)
 {
-	struct stream_ws *self = calloc(1, STREAM_ALLOC_SIZE);
+	struct stream_ws *self = calloc(1, sizeof(*self));
 	if (!self)
 		return NULL;