diff --git a/FemDesign.Core/FemDesignConnection.cs b/FemDesign.Core/FemDesignConnection.cs
index 0b1c0822..b0c6d6c1 100644
--- a/FemDesign.Core/FemDesignConnection.cs
+++ b/FemDesign.Core/FemDesignConnection.cs
@@ -151,7 +151,8 @@ public string SetFemDesignDirectory(string fdInstallationDir)
             {
                 @"C:\Program Files\StruSoft\FEM-Design 23\",
                 @"C:\Program Files\StruSoft\FEM-Design 23 Educational\",
-                @"C:\Program Files\StruSoft\FEM-Design 23 Student\"
+                @"C:\Program Files\StruSoft\FEM-Design 23 Student\",
+                @"C:\Program Files\StruSoft\FEM-Design 23 Night Install\"   // for StruSoft employees
             };
 
             foreach (var dir in defaultDirs)