diff --git a/tools/ch2lmp/charmm2lammps.pl b/tools/ch2lmp/charmm2lammps.pl
index df2a88fd30..bda9ace2bc 100755
--- a/tools/ch2lmp/charmm2lammps.pl
+++ b/tools/ch2lmp/charmm2lammps.pl
@@ -795,8 +795,7 @@
         $masses{$tmp[1]}        = $tmp[3];
         $max_id                 = $tmp[1] if ($max_id<$tmp[1]);
       } elsif ($read&&($tmp[0] eq "ATOM")) {
-        # $names{$tmp[1]} = $tmp[4] if ($read&&($tmp[0] eq "MASS"));
-        #last if ($read&&!scalar(@tmp));                   # quit reading
+        # quit reading when hitting the "ATOM" section
         last;
       }
     }