diff --git a/MozillaFirefox.changes b/MozillaFirefox.changes
index 064e1680..5b49fb6d 100644
--- a/MozillaFirefox.changes
+++ b/MozillaFirefox.changes
@@ -13,7 +13,9 @@ Wed Oct 11 18:28:09 UTC 2023 - Andreas Stieger <andreas.stieger@gmx.de>
 -------------------------------------------------------------------
 Sat Sep 30 19:51:56 UTC 2023 - Björn Bidar <bjorn.bidar@thaodan.de>
 
-- Active KDE integration again, included rebased and updated patches
+- Activate KDE integration again, included rebased and updated patches
+  (upstream removed special files handling for preferences but that
+  has no effect since we haven't shipped obsolete kde.js for a while)
 
 -------------------------------------------------------------------
 Fri Sep 29 06:50:26 UTC 2023 - Wolfgang Rosenauer <wr@rosenauer.org>
diff --git a/MozillaFirefox.spec b/MozillaFirefox.spec
index ab6cb2aa..8523c605 100644
--- a/MozillaFirefox.spec
+++ b/MozillaFirefox.spec
@@ -349,11 +349,11 @@ sed -i "s|potential_python_binary = f\"python3.{i}\"|potential_python_binary = f
 export PYTHON3=/usr/bin/python3.9
 %endif
 
-#kdehelperversion=$(cat toolkit/xre/nsKDEUtils.cpp | grep '#define KMOZILLAHELPER_VERSION' | cut -d ' ' -f 3)
-#if test "$kdehelperversion" != %{kde_helper_version}; then
-#  echo fix kde helper version in the .spec file
-#  exit 1
-#fi
+kdehelperversion=$(cat toolkit/xre/nsKDEUtils.cpp | grep '#define KMOZILLAHELPER_VERSION' | cut -d ' ' -f 3)
+if test "$kdehelperversion" != %{kde_helper_version}; then
+  echo fix kde helper version in the .spec file
+  exit 1
+fi
 
 # When doing only_print_mozconfig, this file isn't necessarily available, so skip it
 cp %{SOURCE4} .obsenv.sh