diff --git a/spec/util_async_spec.lua b/spec/util_async_spec.lua
index 77afd1fc6..dbb49ff7f 100644
--- a/spec/util_async_spec.lua
+++ b/spec/util_async_spec.lua
@@ -1,4 +1,5 @@
 local async = require "util.async";
+local match = require "luassert.match";
 
 describe("util.async", function()
 	local debug = false;