diff --git a/src/hubio.c b/src/hubio.c
index e06462f..46c6069 100644
--- a/src/hubio.c
+++ b/src/hubio.c
@@ -65,7 +65,10 @@ size_t hub_recvq_set(struct hub_recvq* q, void* buf, size_t bufsize)
 	}
 	
 	if (!bufsize)
+	{
+		q->size = 0;
 		return 0;
+	}
 
 	q->buf = hub_malloc(bufsize);
 	if (!q->buf)