diff --git a/gui/wxpython/gmodeler/model.py b/gui/wxpython/gmodeler/model.py
index ae011f057f9..670afe17d90 100644
--- a/gui/wxpython/gmodeler/model.py
+++ b/gui/wxpython/gmodeler/model.py
@@ -39,6 +39,7 @@
 import time
 
 import xml.etree.ElementTree as ET
+from pathlib import Path
 from xml.sax import saxutils
 
 import wx
@@ -542,9 +543,8 @@ def _substituteFile(self, item, params=None, checkOnly=False):
 
         for finput in self.fileInput:
             # read lines
-            with open(finput) as fd:
-                data = fd.read()
-                self.fileInput[finput] = data
+            data = Path(finput).read_text()
+            self.fileInput[finput] = data
 
             # substitute variables
             write = False
diff --git a/gui/wxpython/gui_core/ghelp.py b/gui/wxpython/gui_core/ghelp.py
index 63f7eff2280..b2a0d0500e9 100644
--- a/gui/wxpython/gui_core/ghelp.py
+++ b/gui/wxpython/gui_core/ghelp.py
@@ -23,6 +23,9 @@
 import re
 import textwrap
 import sys
+
+from pathlib import Path
+
 import wx
 from wx.html import HtmlWindow
 from operator import itemgetter
@@ -274,8 +277,7 @@ def _pageCopyright(self):
         """Copyright information"""
         copyfile = os.path.join(os.getenv("GISBASE"), "COPYING")
         if os.path.exists(copyfile):
-            with open(copyfile) as copyrightFile:
-                copytext = copyrightFile.read()
+            copytext = Path(copyfile).read_text()
         else:
             copytext = _("%s file missing") % "COPYING"
 
diff --git a/gui/wxpython/modules/colorrules.py b/gui/wxpython/modules/colorrules.py
index f0d5953867a..08a6a6ebd52 100644
--- a/gui/wxpython/modules/colorrules.py
+++ b/gui/wxpython/modules/colorrules.py
@@ -694,9 +694,7 @@ def OnLoadRulesFile(self, event):
             return
 
         self.rulesPanel.Clear()
-
-        with open(path) as fd:
-            self.ReadColorTable(ctable=fd.read())
+        self.ReadColorTable(ctable=Path(path).read_text())
 
     def ReadColorTable(self, ctable):
         """Read color table
diff --git a/gui/wxpython/modules/mcalc_builder.py b/gui/wxpython/modules/mcalc_builder.py
index eb2dc7691f9..5567d6bd66d 100644
--- a/gui/wxpython/modules/mcalc_builder.py
+++ b/gui/wxpython/modules/mcalc_builder.py
@@ -752,8 +752,7 @@ def OnLoadExpression(self, event):
                 dlg.Destroy()
                 return
 
-            with open(path) as fobj:
-                mctxt = fobj.read()
+            mctxt = Path(path).read_text()
 
             try:
                 result, exp = mctxt.split("=", 1)