From f753b3bfe6723a4d097f469eed0322849434907e Mon Sep 17 00:00:00 2001
From: Lester Hedges <lester.hedges@gmail.com>
Date: Mon, 26 Jan 2026 11:10:48 +0000
Subject: [PATCH] Use length of index list when reporting size of REST2 region.

---
 src/somd2/runner/_base.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/somd2/runner/_base.py b/src/somd2/runner/_base.py
index 87f0d0c..9e0eaf7 100644
--- a/src/somd2/runner/_base.py
+++ b/src/somd2/runner/_base.py
@@ -446,7 +446,7 @@ def __init__(self, system, config):
 
         # Log the atom indices in the REST2 selection.
         if is_rest2:
-            _logger.info(f"REST2 selection contains {len(atoms)} atoms: {idxs}")
+            _logger.info(f"REST2 selection contains {len(idxs)} atoms: {idxs}")
 
         # Apply hydrogen mass repartitioning.
         if self._config.hmr: