diff --git a/Socialmetrica.package/TweetsCollection.class/instance/splitByDays.st b/Socialmetrica.package/TweetsCollection.class/instance/splitByDays.st
index 70c3cbe..10ea3d2 100644
--- a/Socialmetrica.package/TweetsCollection.class/instance/splitByDays.st
+++ b/Socialmetrica.package/TweetsCollection.class/instance/splitByDays.st
@@ -2,7 +2,7 @@ accessing
 splitByDays
 
 	| response spans |
-	response := Dictionary new.
+	response := OrderedDictionary new.
 	self timeSpansByDays doWithIndex: [ :span :i |
 		response
 			at: span asDate asString