diff --git a/aitrainer_backoffice/aitrainer_backoffice/admin.py b/aitrainer_backoffice/aitrainer_backoffice/admin.py
index 44cbf9e..5b935d6 100644
--- a/aitrainer_backoffice/aitrainer_backoffice/admin.py
+++ b/aitrainer_backoffice/aitrainer_backoffice/admin.py
@@ -54,7 +54,7 @@ class ExerciseTypeParentsInline(admin.TabularInline):
 
 
 class ExerciseTypeAdmin(admin.ModelAdmin):
-    list_display = ('exercise_type_id', 'tree', 'name_colored', 'active', 'base')
+    list_display = ('exercise_type_id', 'name_colored', 'active', 'base')
     search_fields = ['name']
     fields = ('name', 'description', 'unit', 'unit_quantity', 'unit_quantity_unit', 'active', 'base')
 
diff --git a/aitrainer_backoffice/aitrainer_backoffice/models.py b/aitrainer_backoffice/aitrainer_backoffice/models.py
index 58eae89..4613488 100644
--- a/aitrainer_backoffice/aitrainer_backoffice/models.py
+++ b/aitrainer_backoffice/aitrainer_backoffice/models.py
@@ -58,7 +58,7 @@ class ExerciseType(models.Model):
         KG = 'kilogram'
 
     exercise_type_id = models.AutoField(primary_key=True)
-    tree = models.ForeignKey(ExerciseTree, on_delete=models.CASCADE)
+#   tree = models.ForeignKey(ExerciseTree, on_delete=models.CASCADE)
     name = models.CharField(max_length=100, help_text='The name should be in English here')
     description = models.TextField(max_length=1000, blank=True, null=True, help_text='The description should be in '
                                                                                      'English here')