diff --git a/src/main/java/seedu/address/model/person/Performance.java b/src/main/java/seedu/address/model/person/Performance.java
index 22c40fb90f0..168ea36e32f 100644
--- a/src/main/java/seedu/address/model/person/Performance.java
+++ b/src/main/java/seedu/address/model/person/Performance.java
@@ -9,6 +9,7 @@
  */
 public class Performance {
 
+    public static final String NULL_PERFORMANCE = "None yet!";
     public static final String MESSAGE_CONSTRAINTS = "Must be an integer between 0 to 100";