1 files changed, 1 insertions, 1 deletions

diff --git a/src/WixToolset.Core/Bind/FileFacade.cs b/src/WixToolset.Core/Bind/FileFacade.cs
index f0ce14ca..511f4aab 100644
--- a/src/WixToolset.Core/Bind/FileFacade.cs
+++ b/src/WixToolset.Core/Bind/FileFacade.cs
@@ -56,7 +56,7 @@ namespace WixToolset.Core.Bind
 
         public int DiskId
         {
-            get => this.FileRow == null ? this.FileTuple.DiskId ?? 0 : this.FileRow.DiskId;
+            get => this.FileRow == null ? this.FileTuple.DiskId ?? 1 : this.FileRow.DiskId;
             set
             {
                 if (this.FileRow == null)