diff --git a/P3D/Resources/ModelManager.vb b/P3D/Resources/ModelManager.vb
index 2cb6abe57..73359729c 100644
--- a/P3D/Resources/ModelManager.vb
+++ b/P3D/Resources/ModelManager.vb
@@ -31,7 +31,11 @@ Public Class ModelManager
 
     Public Shared Function ModelExist(ByVal Path As String) As Boolean
         Dim cContent As ContentManager = ContentPackManager.GetContentManager(Path, ".xnb")
-
+        If cContent.RootDirectory = "Content" Then
+            If GameModeManager.ActiveGameMode.Name <> "Kolben" Then
+                Return False
+            End If
+        End If
         If Path = "" Then
             Return False
         End If