diff --git a/cscripts/csbkgmodel.py b/cscripts/csbkgmodel.py
index 5e98deb..d0aa695 100755
--- a/cscripts/csbkgmodel.py
+++ b/cscripts/csbkgmodel.py
@@ -19,7 +19,6 @@
 #
 # ==========================================================================
 import sys
-import math
 import gammalib
 import ctools
 
@@ -96,10 +95,10 @@ class csbkgmodel(ctools.csobservation):
 
         # Query input parameters
         spatial = self['spatial'].string()
-        if self['spatial'].string() == 'GAUSS':
+        if spatial == 'GAUSS':
             self['gradient'].boolean()
         self['spectral'].string()
-        if self['spatial'].string() == 'NODES':
+        if spatial == 'NODES':
             self._create_energies()
         self['runwise'].boolean()
         self['emin'].real()
@@ -330,7 +329,6 @@ class csbkgmodel(ctools.csobservation):
             spectral = model.spectral()
             nodes    = spectral.nodes()
             for i in range(nodes):
-                ieng = 2*(nodes - i) - 2
                 iint = 2*(nodes - i) - 1
                 if spectral[iint].error() == 0.0:
                     spectral.remove(nodes - i - 1)
diff --git a/examples/show_significance_distribution.py b/examples/show_significance_distribution.py
index 06f9ea8..db1c674 100755
--- a/examples/show_significance_distribution.py
+++ b/examples/show_significance_distribution.py
@@ -2,7 +2,7 @@
 # ==========================================================================
 # Shows the distribution of significances in a given significance map.
 #
-# Copyright (C) 2018 Andreas Specovius
+# Copyright (C) 2018-2019 Andreas Specovius
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -50,7 +50,6 @@ import gammalib
 import cscripts
 try:
     import matplotlib.pyplot as plt
-    import matplotlib.mlab as mlab
     plt.figure()
     plt.close()
 except (ImportError, RuntimeError):
diff --git a/src/ctfindvar/ctfindvar.cpp b/src/ctfindvar/ctfindvar.cpp
index 069993a..03ebdcb 100644
--- a/src/ctfindvar/ctfindvar.cpp
+++ b/src/ctfindvar/ctfindvar.cpp
@@ -768,10 +768,10 @@ void ctfindvar::analyse_cube(void)
     for (int ipix = 0; ipix < m_counts.npix(); ++ipix) {
 
         // Compute total counts for pixel
-        double total_counts = 0.0;
-        for (int k = 0; k < nbins; ++k) {
-            total_counts += m_counts(ipix, k);
-        }
+        //double total_counts = 0.0;
+        //for (int k = 0; k < nbins; ++k) {
+        //    total_counts += m_counts(ipix, k);
+        //}
 
         // Getting the variability significance for the current pixel
         GNdarray pixSig = get_variability_sig(ipix);
diff --git a/test/test_ctfindvar.py b/test/test_ctfindvar.py
index 0c0c4da..b0980b5 100755
--- a/test/test_ctfindvar.py
+++ b/test/test_ctfindvar.py
@@ -2,7 +2,7 @@
 # ==========================================================================
 # This scripts performs unit tests for the ctfindvar tool.
 #
-# Copyright (C) 2018 Simon Bonnefoy
+# Copyright (C) 2018-2019 Simon Bonnefoy
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -18,7 +18,6 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # ==========================================================================
-import os
 import gammalib
 import ctools
 from testing import test