diff --git a/render.py b/render.py
index 5baf3fb..aad9f7f 100644
--- a/render.py
+++ b/render.py
@@ -945,6 +945,7 @@ def generate_clips(options):
                 source = selected.data.path
                 ext = os.path.splitext(source)[1]
                 type_ = e.data['type'][0].lower()
+                ai_type = None
                 if type_.startswith('ai:'):
                     if 'ai' not in clip:
                         clip['ai'] = {}
@@ -955,7 +956,8 @@ def generate_clips(options):
                         n += 1
                     type_ = 'ai:' + ai_type
                 target = os.path.join(prefix, 'video', type_, i.data['title'] + ext)
-                clip['ai'][ai_type] = target
+                if ai_type:
+                    clip['ai'][ai_type] = target
                 if type_ == "source":
                     source_target = target
                     clip['loudnorm'] = get_loudnorm(e.files.filter(selected=True)[0])