diff --git a/cldm/ddim_hacked.py b/cldm/ddim_hacked.py
index 25b1bc9472..7472e46578 100644
--- a/cldm/ddim_hacked.py
+++ b/cldm/ddim_hacked.py
@@ -87,6 +87,7 @@ def sample(self,
 
             elif isinstance(conditioning, list):
                 for ctmp in conditioning:
+                    cbs = ctmp.shape[0]
                     if ctmp.shape[0] != batch_size:
                         print(f"Warning: Got {cbs} conditionings but batch-size is {batch_size}")