diff --git a/MozillaFirefox.changes b/MozillaFirefox.changes
index 87c23a78..3794178d 100644
--- a/MozillaFirefox.changes
+++ b/MozillaFirefox.changes
@@ -1,12 +1,10 @@
 -------------------------------------------------------------------
-Wed Sep 25 07:03:29 UTC 2019 - Bernhard Wiedemann <bwiedemann@suse.com>
+Wed Sep 25 11:25:17 UTC 2019 - Wolfgang Rosenauer <wr@rosenauer.org>
 
 - Allow to build without profile guided optimizations (boo#1040589)
-
--------------------------------------------------------------------
-Fri Sep 20 09:21:05 UTC 2019 - Martin Liška <mliska@suse.cz>
-
-- Make build verbose.
+  (contributed by Bernhard Wiedemann)
+- Make build verbose (contributed by Martin Liška)
+- remove obsolete kde.js setting (boo#1151186)
 
 -------------------------------------------------------------------
 Thu Sep 19 13:31:16 UTC 2019 - Wolfgang Rosenauer <wr@rosenauer.org>
diff --git a/MozillaFirefox.spec b/MozillaFirefox.spec
index 1b2efcbf..fc948ef4 100644
--- a/MozillaFirefox.spec
+++ b/MozillaFirefox.spec
@@ -93,7 +93,9 @@ BuildRequires:  startup-notification-devel
 BuildRequires:  unzip
 BuildRequires:  update-desktop-files
 BuildRequires:  xorg-x11-libXt-devel
+%if 0%{?do_profiling}
 BuildRequires:  xvfb-run
+%endif
 BuildRequires:  yasm
 BuildRequires:  zip
 %if 0%{?suse_version} < 1550
@@ -143,7 +145,6 @@ Source2:        MozillaFirefox-rpmlintrc
 Source3:        mozilla.sh.in
 Source4:        tar_stamps
 Source5:        source-stamp.txt
-Source6:        kde.js
 Source7:        l10n-%{orig_version}%{orig_suffix}.tar.xz
 Source8:        firefox-mimeinfo.xml
 Source9:        firefox.js
@@ -188,7 +189,6 @@ Patch23:        mozilla-bmo1512162.patch
 # Firefox/browser
 Patch101:       firefox-kde.patch
 Patch102:       firefox-branded-icons.patch
-Patch103:       firefox-add-kde.js-in-order-to-survive-PGO-build.patch
 %endif # only_print_mozconfig
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 Requires(post):   coreutils shared-mime-info desktop-file-utils
@@ -324,7 +324,6 @@ cd $RPM_BUILD_DIR/%{source_prefix}
 # Firefox
 %patch101 -p1
 %patch102 -p1
-%patch103 -p1
 %endif # only_print_mozconfig
 
 %build
@@ -473,7 +472,10 @@ echo "Generate big endian version of config/external/icu/data/icud58l.dat"
 ls -l config/external/icu/data
 rm -f config/external/icu/data/icudt*l.dat
 %endif
-xvfb-run --server-args="-screen 0 1920x1080x24" ./mach build -v
+%if 0%{?do_profiling}
+xvfb-run --server-args="-screen 0 1920x1080x24" \
+%endif
+./mach build -v
 %endif # only_print_mozconfig
 
 %install
@@ -496,7 +498,6 @@ mkdir -p %{buildroot}%{progdir}/browser/defaults/preferences/
 # install gre prefs
 install -m 644 %{SOURCE13} %{buildroot}%{progdir}/defaults/pref/
 # install browser prefs
-install -m 644 %{SOURCE6} %{buildroot}%{progdir}/browser/defaults/preferences/kde.js
 install -m 644 %{SOURCE9} %{buildroot}%{progdir}/browser/defaults/preferences/firefox.js
 # build additional locales
 %if %localize
diff --git a/_constraints b/_constraints
index b933b77d..bdf10b5b 100644
--- a/_constraints
+++ b/_constraints
@@ -2,7 +2,7 @@
 <constraints>
   <hardware>
     <disk>
-      <size unit="G">24</size>
+      <size unit="G">25</size>
     </disk>
     <memory>
       <size unit="G">8</size>
diff --git a/firefox-add-kde.js-in-order-to-survive-PGO-build.patch b/firefox-add-kde.js-in-order-to-survive-PGO-build.patch
deleted file mode 100644
index 7e66b01b..00000000
--- a/firefox-add-kde.js-in-order-to-survive-PGO-build.patch
+++ /dev/null
@@ -1,34 +0,0 @@
-From 89767f5dd97e69d7e9189e5603647645818d27d6 Mon Sep 17 00:00:00 2001
-From: marxin <mliska@suse.cz>
-Date: Thu, 29 Nov 2018 10:07:29 +0100
-Subject: [PATCH 2/3] Add kde.js in order to survive PGO build.
-
----
- browser/app/Makefile.in | 1 +
- kde.js                  | 2 ++
- 2 files changed, 3 insertions(+)
- create mode 100644 kde.js
-
-diff --git a/browser/app/Makefile.in b/browser/app/Makefile.in
-index 4129aa43fb91..c9950895d520 100644
---- a/browser/app/Makefile.in
-+++ b/browser/app/Makefile.in
-@@ -57,6 +57,7 @@ endif
- libs:: $(srcdir)/profile/channel-prefs.js
- 	$(NSINSTALL) -D $(DIST)/bin/defaults/pref
- 	$(call py_action,preprocessor,-Fsubstitution $(PREF_PPFLAGS) $(ACDEFINES) $^ -o $(DIST)/bin/defaults/pref/channel-prefs.js)
-+	cp $(topsrcdir)/kde.js $(DIST)/bin/defaults/pref/kde.js
- 
- ifeq (cocoa,$(MOZ_WIDGET_TOOLKIT))
- 
-diff --git a/kde.js b/kde.js
-new file mode 100644
-index 000000000000..b0d3e5d20437
---- /dev/null
-+++ b/kde.js
-@@ -0,0 +1,2 @@
-+pref("browser.preferences.instantApply", false);
-+pref("browser.backspace_action", 0);
--- 
-2.19.1
-
diff --git a/kde.js b/kde.js
deleted file mode 100644
index f06d73ae..00000000
--- a/kde.js
+++ /dev/null
@@ -1 +0,0 @@
-pref("browser.preferences.instantApply", false);