diff --git a/bleachbit.spec b/bleachbit.spec
index 49aeff6..5a94606 100644
--- a/bleachbit.spec
+++ b/bleachbit.spec
@@ -30,27 +30,26 @@ history list of many common programs.
 %prep
 %setup -q
 
-#do not install in /usr/local
-sed -i 's/\/local//' Makefile
+# Do not install in `/usr/local/`.
+sed 's|/local||'  --in-place ./Makefile
 
-# fix appdata location
-sed -i 's/$(datadir)\/appdata/$(datadir)\/metainfo/g' Makefile
+# Fix appdata location.
+sed 's|$(datadir)/appdata|$(datadir)/metainfo|g'  --in-place ./Makefile
 
-# Disable update notifications
-sed -i -e '\@online_update_notification_enabled@s/^.*$/online_update_notification_enabled = False/g' \
-bleachbit/Common.py && egrep online_update_notification_enabled[[:space:]]=[[:space:]]False bleachbit/Common.py
+# Disable update notifications, since package will be updated by DNF or Packagekit.
+sed 's/online_update_notification_enabled = True/online_update_notification_enabled = False/g'  --in-place ./bleachbit/__init__.py
 
 # Drop deprecated line in desktop file.
-sed -i '/Encoding/d' bleachbit.desktop
+sed '/Encoding/d'  --in-place ./bleachbit.desktop
 
 # Drop env shebangs as files in %%_datadir usually don't need this.
-find bleachbit/ -type f -name '*.py' -exec sed -i '1{\@^#!/usr/bin/env python@d}' {} +
+find ./bleachbit/ -type f -name '*.py' -exec sed '1{\@^#!/usr/bin/env python@d}' --in-place '{}' +
 
-# fix makefile to explicitly use python2
-sed -i 's/python/python2/g' Makefile
+# Fix Makefile to explicitly use python2.
+sed 's/python/python2/g'  --in-place ./Makefile
 
 %build
-make -C po local
+make --directory ./po/  local
 %{__python2} setup.py build
 
 %install
@@ -61,8 +60,8 @@ make -C po local
 %find_lang %{name}
 
 %check
-#make -C cleaners tests
-#{__python2} tests/TestUnix.py
+#make --directory ./cleaners/  tests
+#%%{__python2} tests/TestUnix.py
 
 desktop-file-validate %{buildroot}%{_datadir}/applications/bleachbit.desktop
 appstream-util validate-relax --nonet %{buildroot}%{_datadir}/metainfo/%{name}.appdata.xml