diff --git a/BritishHorseRacingApi/Models/NonRunner.cs b/BritishHorseRacingApi/Models/NonRunner.cs
index 44ebb7a..461fa17 100644
--- a/BritishHorseRacingApi/Models/NonRunner.cs
+++ b/BritishHorseRacingApi/Models/NonRunner.cs
@@ -33,7 +33,7 @@ namespace BritishHorseRacingApi.Models
         public DateTime? DeclaredDate { get; set; }
 
         [JsonProperty("declaredTime")]
-        public TimeSpan DeclaredTime { get; set; }
+        public TimeSpan? DeclaredTime { get; set; }
 
         [JsonProperty("declaredReason")]
         public string DeclaredReason { get; set; }