diff --git a/ldm/invoke/generator/omnibus.py b/ldm/invoke/generator/omnibus.py
index 35c4a62d664..277e8970210 100644
--- a/ldm/invoke/generator/omnibus.py
+++ b/ldm/invoke/generator/omnibus.py
@@ -12,6 +12,8 @@
 class Omnibus(Img2Img,Txt2Img):
     def __init__(self, model, precision):
         super().__init__(model, precision)
+        self.pil_mask = None
+        self.pil_image = None
 
     def get_make_image(
             self,