diff --git a/async.lua b/async.lua
index 9a9f59ed..b197f8f2 100644
--- a/async.lua
+++ b/async.lua
@@ -6,6 +6,11 @@ Async = {}
 
 function Async.parallel(tasks, cb)
 
+	if #tasks == 0 then
+		cb({})
+		return
+	end
+
 	local remaining = #tasks
 	local results   = {}
 
@@ -35,6 +40,7 @@ function Async.parallelLimit(tasks, limit, cb)
 
 	if #tasks == 0 then
 		cb({})
+		return
 	end
 
 	local remaining = #tasks