diff --git a/firefox-48.0.1-install_dir.patch b/firefox-48.0.1-install_dir.patch
new file mode 100644
index 0000000..51fe4ba
--- /dev/null
+++ b/firefox-48.0.1-install_dir.patch
@@ -0,0 +1,12 @@
+diff -up firefox-29.0/mozilla-release/config/baseconfig.mk.orig firefox-29.0/mozilla-release/config/baseconfig.mk
+--- mozilla-release/config/baseconfig.mk.orig	2014-04-22 15:38:52.948165295 +0200
++++ mozilla-release/config/baseconfig.mk	2014-04-22 15:42:20.387481673 +0200
+@@ -4,7 +4,7 @@
+ # whether a normal build is happening or whether the check is running.
+ includedir := $(includedir)/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
+ idldir = $(datadir)/idl/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
+-installdir = $(libdir)/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
++installdir = $(libdir)/$(MOZ_APP_NAME)
+ sdkdir = $(libdir)/$(MOZ_APP_NAME)-devel-$(MOZ_APP_VERSION)
+ ifndef TOP_DIST
+ TOP_DIST = dist
diff --git a/firefox.spec b/firefox.spec
index 84ee9dd..791655c 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -7,7 +7,7 @@
 %define        majversion                  %(echo %version | cut -d. -f 1-2)
 %define        xulrunner_ver               %(echo %version | cut -d. -f 1)
 %define        firefox_internal_version    %(echo %version | cut -d. -f1)
-%define        firefoxappdir               %{_libdir}/firefox-%{firefox_internal_version}
+%define        firefoxappdir               %{_libdir}/firefox
 %define        firefoxsdkdir               %{_libdir}/firefox-devel-%{firefox_internal_version}
 %define        firefoxincludedir           %{_includedir}/firefox-%{version}
 #%define        mozilla_version             central
@@ -15,7 +15,7 @@
 #% define        source_dir                  mozilla-%{mozilla_version}
 
 Name:          firefox
-Version:       47.0.1
+Version:       48.0.1
 Release:       1mamba
 Epoch:         1
 Summary:       The next generation browsing technology from mozilla.org
@@ -47,7 +47,8 @@ Patch7:        firefox-36.0.3-fix-build-upstream.patch
 Patch8:        firefox-39.0-openmamba-prefs.patch
 Patch9:        firefox-42.0-build-add-freetype-system-wrapper.patch
 Patch10:       firefox-43.0.4-fix-missing-PR_snprint.patch
-Patch11:        firefox-47.0-gcc-6.1.0.patch
+Patch11:       firefox-47.0-gcc-6.1.0.patch
+Patch12:       firefox-48.0.1-install_dir.patch
 License:       GPL, LGPL, MPL 1.1
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
@@ -154,7 +155,8 @@ sed -e 's|__RPM_VERSION_INTERNAL__|%{firefox_internal_version}|' %{PATCH0} | pat
 %patch8 -p1
 #%patch9 -p1
 #%patch10 -p1
-%patch11 -p1
+#%patch11 -p1
+%patch12 -p1
 #% define _use_internal_dependency_generator 0
 #% define __find_provides %{_builddir}/firefox-%{version}/%{source_dir}/find_provides.sh
 #
@@ -188,26 +190,17 @@ export MOZ_PHOENIX="1"
 export BUILD_OFFICIAL="1"
 export MOZILLA_OFFICIAL="1"
 ../configure \
-  --build=%{_build} \
   --host=%{_host} \
   --target=%{_target_platform} \
   --prefix=%{_prefix} \
-  --bindir=%{_bindir} \
-  --libdir=%{_libdir} \
-  --mandir=%{_mandir} \
   --disable-elf-hack \
   --enable-system-cairo \
-  --with-system-libxul \
   --with-system-jpeg \
   --with-system-zlib \
   --with-system-png \
-  --with-system-mng \
   --with-system-nspr \
   --with-system-nss \
   --with-x \
-  --enable-canvas \
-  --enable-svg \
-  --enable-svg-renderer=cairo \
   --with-pthreads \
   --with-java-bin-path=%{_bindir} \
   --enable-default-toolkit=cairo-gtk3  \
@@ -215,43 +208,54 @@ export MOZILLA_OFFICIAL="1"
   --enable-ldap \
   --enable-application=browser \
   --disable-calendar \
-  --disable-composer \
-  --disable-mailnews \
-  --with-embedding-profile=default \
   --with-default-mozilla-five-home=%{firefoxappdir} \
   --with-user-appdir=.firefox \
   --with-distribution-id="%{distroname}" \
-  --disable-freetype2 \
-  --disable-xprint \
-  --enable-pango \
-  --enable-crypto \
-  --enable-single-profile \
-  --disable-profilesharing \
   --enable-accessibility \
-  --enable-xinerama \
-  --enable-xft \
   --enable-extensions=default \
-  --disable-installer \
-  --enable-reorder \
   --enable-optimize \
   --disable-debug \
   --disable-tests \
   --disable-strip \
-  --disable-pedantic \
-  --enable-jsd \
   --enable-necko-protocols=all \
 %if %{testing}
   --enable-image-decoders=all \
   --enable-image-encoders=all \
 %endif
-  --enable-storage \
   --disable-necko-wifi \
   --enable-official-branding \
   --enable-startup-notification \
   --enable-chrome-format=omni \
-  --enable-libnotify \
-  --enable-gio \
-  --disable-gnomevfs
+  --enable-gio
+
+# Removed since 48.0:
+#  --build=%{_build} \
+#  --bindir=%{_bindir} \
+#  --libdir=%{_libdir} \
+#  --mandir=%{_mandir} \
+#  --with-system-libxul \
+#  --with-system-mng \
+#  --enable-canvas \
+#  --enable-svg \
+#  --enable-svg-renderer=cairo \
+#  --disable-composer \
+#  --disable-mailnews \
+#  --with-embedding-profile=default \
+#  --disable-freetype2 \
+#  --disable-xprint \
+#  --enable-pango \
+#  --enable-crypto \
+#  --enable-single-profile \
+#  --disable-profilesharing \
+#  --enable-xinerama \
+#  --enable-xft \
+#  --disable-installer \
+#  --enable-reorder \
+#  --disable-pedantic \
+#  --enable-jsd \
+#  --enable-storage \
+#  --enable-libnotify \
+#  --disable-gnomevfs
 
 #  --disable-logging \
 # 	--with-system-mozldap \   --program-suffix=4
@@ -300,7 +304,7 @@ cat > dist/bin/browser/defaults/preferences/firefox-l10n.js << _EOF
 pref("general.useragent.locale", "chrome://global/locale/intl.properties");
 _EOF
 
-%makeinstall
+%makeinstall libdir=%{_libdir}
 
 mkdir -p %{buildroot}%{_datadir}/applications
 desktop-file-install --vendor mozilla --dir %{buildroot}%{_datadir}/applications %{SOURCE2}
@@ -369,7 +373,7 @@ includedir=%{firefoxincludedir}
 
 Name: Mozilla Plug-In API
 Description: Mozilla Plug-In API
-Version: 47.0.1
+Version: 48.0.1
 
 Cflags: -I\${includedir} -DXP_UNIX
 _EOF
@@ -452,10 +456,10 @@ fi
 #%dir %{firefoxappdir}/browser/searchplugins
 #%{firefoxappdir}/browser/searchplugins/*
 %{firefoxappdir}/firefox-bin
-%{firefoxappdir}/webapprt-stub
-%dir %{firefoxappdir}/webapprt
-%{firefoxappdir}/webapprt/omni.ja
-%{firefoxappdir}/webapprt/webapprt.ini
+#%{firefoxappdir}/webapprt-stub
+#%dir %{firefoxappdir}/webapprt
+#%{firefoxappdir}/webapprt/omni.ja
+#%{firefoxappdir}/webapprt/webapprt.ini
 #%dir %{firefoxappdir}/modules
 #%dir %{firefoxappdir}/modules/services-aitc
 #%{firefoxappdir}/modules/services-aitc/.mkdir.done
@@ -474,27 +478,28 @@ fi
 #%{_libdir}/firefox-*/chrome.manifest
 #%dir %{_libdir}/firefox-*/components
 #%{_libdir}/firefox-*/components/*
-%{_libdir}/firefox-*/crashreporter
-%{_libdir}/firefox-*/defaults/pref/channel-prefs.js
-%{_libdir}/firefox-*/dependentlibs.list
-%dir %{_libdir}/firefox-*/dictionaries
-%{_libdir}/firefox-*/dictionaries/*
-%dir %{_libdir}/firefox-*/gmp-clearkey
-%dir %{_libdir}/firefox-*/gmp-clearkey/0.1
-%{_libdir}/firefox-*/gmp-clearkey/0.1/*
-%{_libdir}/firefox-*/Throbber-small.gif
-%{_libdir}/firefox-*/icons/updater.png
+%{firefoxappdir}/crashreporter
+%{firefoxappdir}/defaults/pref/channel-prefs.js
+%{firefoxappdir}/dependentlibs.list
+%dir %{firefoxappdir}/dictionaries
+%{firefoxappdir}/dictionaries/*
+%dir %{firefoxappdir}/gmp-clearkey
+%dir %{firefoxappdir}/gmp-clearkey/0.1
+%{firefoxappdir}/gmp-clearkey/0.1/*
+%{firefoxappdir}/Throbber-small.gif
+%{firefoxappdir}/icons/updater.png
+%{firefoxappdir}/icudt56l.dat
 #%{_libdir}/firefox-*/libmozalloc.so
-%{_libdir}/firefox-*/gtk2/libmozgtk.so
-%{_libdir}/firefox-*/liblgpllibs.so
-%{_libdir}/firefox-*/libmozavcodec.so
-%{_libdir}/firefox-*/libmozavutil.so
-%{_libdir}/firefox-*/libmozgtk.so
-%{_libdir}/firefox-*/libmozsqlite3.so
-%{_libdir}/firefox-*/libxul.so
-%{_libdir}/firefox-*/omni.ja
-%{_libdir}/firefox-*/plugin-container
-%{_libdir}/firefox-*/updater
+%{firefoxappdir}/gtk2/libmozgtk.so
+%{firefoxappdir}/liblgpllibs.so
+%{firefoxappdir}/libmozavcodec.so
+%{firefoxappdir}/libmozavutil.so
+%{firefoxappdir}/libmozgtk.so
+%{firefoxappdir}/libmozsqlite3.so
+%{firefoxappdir}/libxul.so
+%{firefoxappdir}/omni.ja
+%{firefoxappdir}/plugin-container
+%{firefoxappdir}/updater
 %dir %{_datadir}/idl/firefox-*
 %{_datadir}/idl/firefox-*/*
 
@@ -1755,6 +1760,9 @@ Zulu language support for Firefox.
 #%{firefoxappdir}/browser/extensions/langpack-zu@firefox.mozilla.org/
 
 %changelog
+* Tue Aug 23 2016 Automatic Build System <autodist@mambasoft.it> 48.0.1-1mamba
+- automatic version update by autodist
+
 * Tue Jun 28 2016 Automatic Build System <autodist@mambasoft.it> 47.0.1-1mamba
 - automatic version update by autodist