diff --git a/src/main/java/jota/model/Bundle.java b/src/main/java/jota/model/Bundle.java
index 8e3cbe5..2c920bf 100644
--- a/src/main/java/jota/model/Bundle.java
+++ b/src/main/java/jota/model/Bundle.java
@@ -142,6 +142,6 @@ public class Bundle implements Comparable<Bundle> {
 
     @Override
     public int compareTo(Bundle o) {
-        return this.getTransactions().get(0).getTimestamp().compareTo(getTransactions().get(0).getTimestamp());
+        return this.getTransactions().get(0).getTimestamp().compareTo(o.getTransactions().get(0).getTimestamp());
     }
 }
\ No newline at end of file