diff --git a/TopModel.Generator/Program.cs b/TopModel.Generator/Program.cs
index 148cbce4..1402c5e9 100644
--- a/TopModel.Generator/Program.cs
+++ b/TopModel.Generator/Program.cs
@@ -700,6 +700,11 @@ void SearchConfigFile(string dirName, int depth = 0)
 
 static string? GetFolderHash(string path)
 {
+    if (!Directory.Exists(path))
+    {
+        return null;
+    }
+
     return GetHash(Directory.EnumerateFiles(path, "*", SearchOption.AllDirectories), path);
 }