diff --git a/meshmode/mesh/__init__.py b/meshmode/mesh/__init__.py
index 3077143d09efe1c1a076ea2e191d46e8e52aeb66..5d98c1b5aa396d5c91f5f70f64c9a7e3a02fd464 100644
--- a/meshmode/mesh/__init__.py
+++ b/meshmode/mesh/__init__.py
@@ -965,7 +965,7 @@ def check_bc_coverage(mesh, boundary_tags, incomplete_ok=False):
     """
 
     for igrp, fagrp_map in enumerate(mesh.facial_adjacency_groups):
-        bdry_grp = fagrp_map.get((igrp, None))
+        bdry_grp = fagrp_map.get(None)
         if bdry_grp is None:
             continue