diff --git a/src/SourceIndexServer/Models/Serialization.cs b/src/SourceIndexServer/Models/Serialization.cs
index 2c58fa085..54ac97a95 100644
--- a/src/SourceIndexServer/Models/Serialization.cs
+++ b/src/SourceIndexServer/Models/Serialization.cs
@@ -25,7 +25,7 @@ public static IEnumerable<AssemblyInfo> ReadAssemblies(string rootPath)
         public static IEnumerable<string> ReadProjects(string folderPath)
         {
             var projectInfoFile = Path.Combine(folderPath, Constants.MasterProjectMap + ".txt");
-            if (!File.Exists(folderPath))
+            if (!File.Exists(projectInfoFile))
             {
                 return Array.Empty<string>();
             }