diff --git a/AstroAtmosphere/neoslalib.py b/AstroAtmosphere/neoslalib.py
index 0488fdf..bf42e6a 100644
--- a/AstroAtmosphere/neoslalib.py
+++ b/AstroAtmosphere/neoslalib.py
@@ -33,7 +33,7 @@ def sla_atms(RT, TT, DNT, GAMAL, R):
 			R * rate the refractive index is changing at R
 	'''
 	_B 		= GAMAL / TT
-	_W 		= (DNT - 1) * np.exp( -B * (R - RT) )
+	_W 		= (DNT - 1) * np.exp( -_B * (R - RT) )
 	DN  	= 1+_W
 	RDNDR 	= -R * _B * _W
 	return DN, RDNDR
diff --git a/setup.py b/setup.py
index 8087e34..ce6a743 100644
--- a/setup.py
+++ b/setup.py
@@ -21,14 +21,14 @@ def setup_package():
     # write_version_py()
 
     setup(name='AstroAtmosphere',
-          version='1.2',
+          version='1.2.1',
           description='Collection of equations for refractive index, refraction and dispersion calculations of atmospheric air.',
           long_description=__readme__,
           long_description_content_type='text/markdown',
           author='Joost van den Born',
           author_email='born@astron.nl',
           url='https://gitlab.astro-wise.org/micado/atmosphericmodel',
-          download_url='https://gitlab.astro-wise.org/micado/atmosphericmodel/-/archive/v1.2/atmosphericmodel-v1.2.tar.gz',
+          download_url='https://gitlab.astro-wise.org/micado/atmosphericmodel/-/archive/v1.2.1/atmosphericmodel-v1.2.1.tar.gz',
           license='GNU General Public License v3',
           data_files = [('',['LICENSE.txt'])],
           package_dir={'AstroAtmosphere': 'AstroAtmosphere'},