diff --git a/mithril.js b/mithril.js
index 290d0232..f429a659 100644
--- a/mithril.js
+++ b/mithril.js
@@ -586,9 +586,13 @@ Mithril = m = new function app(window, undefined) {
 		var deferred = m.deferred()
 		var outstanding = args.length
 		var results = new Array(outstanding)
-		for (var i = 0; i < args.length; i++) {
-			args[i].then(synchronizer(i, true), synchronizer(i, false))
+		if (args.length > 0) {
+			for (var i = 0; i < args.length; i++) {
+				args[i].then(synchronizer(i, true), synchronizer(i, false))
+			}
 		}
+		else deferred.resolve()
+		
 		return deferred.promise
 	}
 	function identity(value) {return value}
diff --git a/tests/mithril-tests.js b/tests/mithril-tests.js
index 53323b88..7e6ebbda 100644
--- a/tests/mithril-tests.js
+++ b/tests/mithril-tests.js
@@ -1517,6 +1517,11 @@ function testMithril(mock) {
 		deferred1.resolve("test")
 		return value[0] === "test" && value[1] === "foo"
 	})
+	test(function() {
+		var value = 1
+		m.sync([]).then(function() {value = 2})
+		return value == 2
+	})
 
 	//m.startComputation/m.endComputation
 	test(function() {