diff --git a/xapi-model/src/main/java/dev/learning/xapi/model/Score.java b/xapi-model/src/main/java/dev/learning/xapi/model/Score.java
index ee79cce7..e6021838 100644
--- a/xapi-model/src/main/java/dev/learning/xapi/model/Score.java
+++ b/xapi-model/src/main/java/dev/learning/xapi/model/Score.java
@@ -24,12 +24,13 @@
 @JsonInclude(Include.NON_EMPTY)
 public class Score {
 
+  // TODO check that @DecimalMax and @DecimalMin apply to float
   /**
    * The score related to the experience as modified by scaling and/or normalization.
    */
   @DecimalMax(value = "1.0")
   @DecimalMin(value = "-1.0")
-  private float scaled;
+  private Float scaled;
 
   /**
    * The score achieved by the Actor in the experience described by the Statement.