1 files changed, 1 insertions, 1 deletions

diff --git a/src/WixToolset.Core.Burn/Bind/BindBundleCommand.cs b/src/WixToolset.Core.Burn/Bind/BindBundleCommand.cs
index c9917073..989a1b65 100644
--- a/src/WixToolset.Core.Burn/Bind/BindBundleCommand.cs
+++ b/src/WixToolset.Core.Burn/Bind/BindBundleCommand.cs
@@ -262,7 +262,7 @@ namespace WixToolset.Core.Burn
 
                     foreach (var payload in packagePayloads)
                     {
-                        facade.PackageTuple.Size += payload.FileSize;
+                        facade.PackageTuple.Size += payload.FileSize.Value;
                     }
 
                     if (!facade.PackageTuple.InstallSize.HasValue)