diff --git a/src/main/java/financialtransactions/Transaction.java b/src/main/java/financialtransactions/Transaction.java
index 5f4f7e7c8a..c7c444a031 100644
--- a/src/main/java/financialtransactions/Transaction.java
+++ b/src/main/java/financialtransactions/Transaction.java
@@ -42,6 +42,9 @@ public String toString() {
     }
 
     public String toSave() {
+        if (this instanceof Outflow) {
+            amount *= -1;
+        }
         return String.format("%s|%.2f|%s|%s\n", name, amount, date.toString(), category);
     }
 }