1 files changed, 2 insertions, 2 deletions

diff --git a/src/WixToolset.Data/Tuples/ClassTuple.cs b/src/WixToolset.Data/Tuples/ClassTuple.cs
index 5e40fe35..a5ff89e8 100644
--- a/src/WixToolset.Data/Tuples/ClassTuple.cs
+++ b/src/WixToolset.Data/Tuples/ClassTuple.cs
@@ -107,9 +107,9 @@ namespace WixToolset.Data.Tuples
             set => this.Set((int)ClassTupleFields.IconRef, value);
         }
 
-        public int IconIndex
+        public int? IconIndex
         {
-            get => (int)this.Fields[(int)ClassTupleFields.IconIndex];
+            get => (int?)this.Fields[(int)ClassTupleFields.IconIndex];
             set => this.Set((int)ClassTupleFields.IconIndex, value);
         }