diff --git a/async.lua b/async.lua
index ba2783f9..9a9f59ed 100644
--- a/async.lua
+++ b/async.lua
@@ -33,7 +33,7 @@ end
 
 function Async.parallelLimit(tasks, limit, cb)
 
-	if #tasks = 0 then
+	if #tasks == 0 then
 		cb({})
 	end