diff --git a/io_mesh_pdb/__init__.py b/io_mesh_pdb/__init__.py
index 2568ec7c59f0fca6334d45d16d464a73f45d0d44..206dd2187bc1ea91145a13009646a85baf49d5e0 100644
--- a/io_mesh_pdb/__init__.py
+++ b/io_mesh_pdb/__init__.py
@@ -25,7 +25,7 @@
 #
 #  Start of project              : 2011-08-31 by Clemens Barth
 #  First publication in Blender  : 2011-11-11
-#  Last modified                 : 2012-03-23
+#  Last modified                 : 2012-10-13
 #
 #  Acknowledgements: Thanks to ideasman, meta_androcto, truman, kilon,
 #  dairin0d, PKHG, Valter, etc
diff --git a/io_mesh_pdb/import_pdb.py b/io_mesh_pdb/import_pdb.py
index a24d8aeb03477142b384edfaed8caabc0c6f4c5b..70795f6c1b0616da1b2ef728592f4ed5dfcfa6b1 100644
--- a/io_mesh_pdb/import_pdb.py
+++ b/io_mesh_pdb/import_pdb.py
@@ -25,10 +25,9 @@ from math import pi, cos, sin
 from mathutils import Vector, Matrix
 from copy import copy
 
-# These are variables, which contain the name of the PDB file and
-# the path of the PDB file.
-# They are used almost everywhere, which is the reason why they
-# should stay global. First, they are empty and get 'filled' directly
+# This variable contains the path of the PDB file.
+# It is used almost everywhere, which explains why it
+# should stay global. First, it is empty and gets 'filled' directly
 # after having chosen the PDB file (see 'class LoadPDB' further below).
 
 ATOM_PDB_FILEPATH = ""
@@ -1001,7 +1000,7 @@ def DEF_atom_pdb_main(use_mesh,Ball_azimuth,Ball_zenith,
 
         # Rotate the camera around its axis by 90° such that we have a nice
         # camera position and view onto the object.
-        bpy.ops.transform.rotate(value=(90.0*2*math.pi/360.0,),
+        bpy.ops.transform.rotate(value=(90.0*2*math.pi/360.0),
                                  axis=object_camera_vec,
                                  constraint_axis=(False, False, False),
                                  constraint_orientation='GLOBAL',