diff --git a/src/Runner.Worker/ActionManifestManager.cs b/src/Runner.Worker/ActionManifestManager.cs
index 138755047..d47eb4a14 100644
--- a/src/Runner.Worker/ActionManifestManager.cs
+++ b/src/Runner.Worker/ActionManifestManager.cs
@@ -78,6 +78,7 @@ namespace GitHub.Runner.Worker
                 if (executionContext.FileTable == null)
                 {
                     executionContext.FileTable = new string[0];
+                    executionContext.FileTable.Add(fileRelativePath);
                 }
                 else if (fileId > executionContext.FileTable.Count)
                 {