diff --git a/easybuild/easyblocks/generic/pythonbundle.py b/easybuild/easyblocks/generic/pythonbundle.py
index 5ed19b42ccb..12a87b9598c 100644
--- a/easybuild/easyblocks/generic/pythonbundle.py
+++ b/easybuild/easyblocks/generic/pythonbundle.py
@@ -185,7 +185,7 @@ def sanity_check_step(self, *args, **kwargs):
 
     def _sanity_check_step_extensions(self):
         """Run the pip check for extensions if enabled"""
-        super(PythonBundle, self)._sanity_check_step_extensions()
+        super()._sanity_check_step_extensions()
 
         sanity_pip_check = self.cfg['sanity_pip_check']
         unversioned_packages = set(self.cfg['unversioned_packages'])
diff --git a/easybuild/easyblocks/generic/pythonpackage.py b/easybuild/easyblocks/generic/pythonpackage.py
index ec939223037..305459761c2 100644
--- a/easybuild/easyblocks/generic/pythonpackage.py
+++ b/easybuild/easyblocks/generic/pythonpackage.py
@@ -1046,9 +1046,9 @@ def sanity_check_step(self, *args, **kwargs):
                 # If the main easyblock (e.g. PythonBundle) defines the variable
                 # we trust it does the pip check if requested and checks for mismatches
                 sanity_pip_check = False
-                msg = "Sanity 'pip check' disabled for {self.name} extension, "
-                msg += "assuming that parent will take care of it"
-                self.log.info(msg)
+                self.log.info(f"Sanity 'pip check' disabled for {self.name} extension, "
+                              f"assuming that parent will take care of it"
+                              )
 
         if sanity_pip_check:
             if not self.is_extension: