diff --git a/python/plugins/processing/algs/qgis/BarPlot.py b/python/plugins/processing/algs/qgis/BarPlot.py
index b8d9cf66846..8ce4b082698 100644
--- a/python/plugins/processing/algs/qgis/BarPlot.py
+++ b/python/plugins/processing/algs/qgis/BarPlot.py
@@ -25,9 +25,6 @@ __copyright__ = '(C) 2013, Victor Olaya'
 
 __revision__ = '$Format:%H$'
 
-#import matplotlib.pyplot as plt
-#import matplotlib.pylab as lab
-
 import plotly as plt
 import plotly.graph_objs as go
 import numpy as np
diff --git a/python/plugins/processing/algs/qgis/QGISAlgorithmProvider.py b/python/plugins/processing/algs/qgis/QGISAlgorithmProvider.py
index 89e4eaa50d8..e1e1f113fd9 100644
--- a/python/plugins/processing/algs/qgis/QGISAlgorithmProvider.py
+++ b/python/plugins/processing/algs/qgis/QGISAlgorithmProvider.py
@@ -28,13 +28,9 @@ __revision__ = '$Format:%H$'
 import os
 
 try:
-    #import matplotlib.pyplot
-    #assert matplotlib  # NOQA silence pyflakes
-    #hasMatplotlib = True
     import plotly
     hasPlotly = True
 except:
-    #hasMatplotlib = False
     hasPlotly = False
 
 from qgis.PyQt.QtGui import QIcon