From 23024f3347cab5638c981f08fc7efffb5414cb37 Mon Sep 17 00:00:00 2001
From: ntustison <ntustison@gmail.com>
Date: Sun, 24 Nov 2024 14:34:33 -0800
Subject: [PATCH] BUG:  Fix logic.

---
 ants/registration/registration.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ants/registration/registration.py b/ants/registration/registration.py
index 15ffc44c..90ab1280 100644
--- a/ants/registration/registration.py
+++ b/ants/registration/registration.py
@@ -1700,7 +1700,7 @@ def label_image_registration(fixed_label_images,
         total_number_of_labels += len(common_label_ids[i])
         if verbose:
             print("Common label ids for image pair ", str(i), ": ", common_label_ids[i])
-        if len(common_label_ids) == 0:
+        if len(common_label_ids[i]) == 0:
             raise ValueError("No common labels for image pair " + str(i))
     
     if verbose: