diff --git a/src/ch/ivy/bb/DataService.java b/src/ch/ivy/bb/DataService.java
index 561db42..9b3769c 100644
--- a/src/ch/ivy/bb/DataService.java
+++ b/src/ch/ivy/bb/DataService.java
@@ -79,7 +79,7 @@ public List<DataItem> items() {
 	public List<AnimatedDataItem> animatedItems() {
 		List<AnimatedDataItem> result = new ArrayList<AnimatedDataItem>();
 
-		var open = 100;
+		long open = 100;
 		var close = 250;
 
 		for (var i = 1; i <365; i++) {