diff --git a/src/hlua.c b/src/hlua.c
index 60cf8f948..5096768be 100644
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -5544,6 +5544,7 @@ static struct task *hlua_process_task(struct task *task)
 		hlua_ctx_destroy(hlua);
 		task_delete(task);
 		task_free(task);
+		task = NULL;
 		break;
 
 	case HLUA_E_AGAIN: /* co process or timeout wake me later. */