diff --git a/python/vasp/plotools.py b/python/vasp/plotools.py
index eb229b7a..ac67e96e 100644
--- a/python/vasp/plotools.py
+++ b/python/vasp/plotools.py
@@ -86,7 +86,7 @@ def generate_plo(conf_pars, el_struct):
 
     pgroups = []
     for gr_par in conf_pars.groups:
-        pgroup = ProjectorGroup(gr_par, pshells, eigvals, el_struct.ferw)
+        pgroup = ProjectorGroup(gr_par, pshells, eigvals)
         pgroup.orthogonalize()
         print "Density matrix:"
         dm, ov = pshells[pgroup.ishells[0]].density_matrix(el_struct)
diff --git a/python/vasp/proj_group.py b/python/vasp/proj_group.py
index dc95b41d..766d1db7 100644
--- a/python/vasp/proj_group.py
+++ b/python/vasp/proj_group.py
@@ -24,7 +24,7 @@ class ProjectorGroup:
     - eigvals (numpy.array) : array of KS eigenvalues
 
     """
-    def __init__(self, gr_pars, shells, eigvals, ferw):
+    def __init__(self, gr_pars, shells, eigvals):
         """
         Constructor
         """
diff --git a/python/vasp/test/_proj_group/test_block_map.py b/python/vasp/test/_proj_group/test_block_map.py
index e72af292..d09062ac 100644
--- a/python/vasp/test/_proj_group/test_block_map.py
+++ b/python/vasp/test/_proj_group/test_block_map.py
@@ -61,7 +61,7 @@ class TestBlockMap(mytest.MyTestCase):
         for sh_par in self.pars.shells:
             shells.append(ProjectorShell(sh_par, self.mock_plo, self.mock_proj_params, 0))
 
-        proj_gr = ProjectorGroup(self.pars.groups[0], shells, self.mock_eigvals, 0)
+        proj_gr = ProjectorGroup(self.pars.groups[0], shells, self.mock_eigvals)
 
         proj_gr.normion = False
         block_maps, ndim = proj_gr.get_block_matrix_map()
@@ -85,7 +85,7 @@ class TestBlockMap(mytest.MyTestCase):
         for sh_par in self.pars.shells:
             shells.append(ProjectorShell(sh_par, self.mock_plo, self.mock_proj_params, 0))
 
-        proj_gr = ProjectorGroup(self.pars.groups[0], shells, self.mock_eigvals, 0)
+        proj_gr = ProjectorGroup(self.pars.groups[0], shells, self.mock_eigvals)
 
         proj_gr.normion = True
         block_maps, ndim = proj_gr.get_block_matrix_map()
diff --git a/python/vasp/test/_proj_group/test_one_site.py b/python/vasp/test/_proj_group/test_one_site.py
index 7d1ea2ef..87b4023a 100644
--- a/python/vasp/test/_proj_group/test_one_site.py
+++ b/python/vasp/test/_proj_group/test_one_site.py
@@ -35,10 +35,9 @@ class TestProjectorGroup(mytest.MyTestCase):
 
         efermi = vasp_data.doscar.efermi
         self.eigvals = vasp_data.eigenval.eigs - efermi
-        ferw = vasp_data.eigenval.ferw
 
         self.proj_sh = ProjectorShell(self.pars.shells[0], vasp_data.plocar.plo, vasp_data.plocar.proj_params, 0)
-        self.proj_gr = ProjectorGroup(self.pars.groups[0], [self.proj_sh], self.eigvals, ferw)
+        self.proj_gr = ProjectorGroup(self.pars.groups[0], [self.proj_sh], self.eigvals)
 
 # Scenario 1
     def test_ortho(self):
diff --git a/python/vasp/test/_proj_group/test_select_bands.py b/python/vasp/test/_proj_group/test_select_bands.py
index 55a37d6c..4d4fff7c 100644
--- a/python/vasp/test/_proj_group/test_select_bands.py
+++ b/python/vasp/test/_proj_group/test_select_bands.py
@@ -36,10 +36,9 @@ class TestSelectBands(mytest.MyTestCase):
 
         efermi = vasp_data.doscar.efermi
         self.eigvals = vasp_data.eigenval.eigs - efermi
-        ferw = vasp_data.eigenval.ferw
 
         self.proj_sh = ProjectorShell(self.pars.shells[0], vasp_data.plocar.plo, vasp_data.plocar.proj_params, 0)
-        self.proj_gr = ProjectorGroup(self.pars.groups[0], [self.proj_sh], self.eigvals, ferw)
+        self.proj_gr = ProjectorGroup(self.pars.groups[0], [self.proj_sh], self.eigvals)
 
 # Scenario 1
     def test_correct(self):
diff --git a/python/vasp/test/_proj_group/test_two_site.py b/python/vasp/test/_proj_group/test_two_site.py
index de7cca84..b4c1f025 100644
--- a/python/vasp/test/_proj_group/test_two_site.py
+++ b/python/vasp/test/_proj_group/test_two_site.py
@@ -37,10 +37,9 @@ class TestProjectorGroupTwoSite(mytest.MyTestCase):
 
         efermi = vasp_data.doscar.efermi
         self.eigvals = vasp_data.eigenval.eigs - efermi
-        ferw = vasp_data.eigenval.ferw
 
         self.proj_sh = ProjectorShell(self.pars.shells[0], vasp_data.plocar.plo, vasp_data.plocar.proj_params, 0)
-        self.proj_gr = ProjectorGroup(self.pars.groups[0], [self.proj_sh], self.eigvals, ferw)
+        self.proj_gr = ProjectorGroup(self.pars.groups[0], [self.proj_sh], self.eigvals)
 
 # Scenario 1
     def test_ortho(self):
diff --git a/python/vasp/test/_proj_shell/test_projshells.py b/python/vasp/test/_proj_shell/test_projshells.py
index 2c665921..a8231323 100644
--- a/python/vasp/test/_proj_shell/test_projshells.py
+++ b/python/vasp/test/_proj_shell/test_projshells.py
@@ -37,11 +37,10 @@ class TestProjectorShell(mytest.MyTestCase):
 
         efermi = vasp_data.doscar.efermi
         eigvals = vasp_data.eigenval.eigs - efermi
-        ferw = vasp_data.eigenval.ferw
         emin, emax = self.pars.groups[0]['ewindow']
 
         self.proj_sh = ProjectorShell(self.pars.shells[0], vasp_data.plocar.plo, vasp_data.plocar.proj_params, 0)
-        self.proj_gr = ProjectorGroup(self.pars.groups[0], [self.proj_sh], eigvals, ferw)
+        self.proj_gr = ProjectorGroup(self.pars.groups[0], [self.proj_sh], eigvals)
 
 # Scenario 1
     def test_example(self):