diff --git a/qalculate-qt.changes b/qalculate-qt.changes
index 97a4083..1c85a8c 100644
--- a/qalculate-qt.changes
+++ b/qalculate-qt.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Nov 11 09:06:56 UTC 2022 - Paolo Stivanin <info@paolostivanin.com>
+
+- Fix spec file, update QT min version.
+
 -------------------------------------------------------------------
 Thu Nov 10 09:20:14 UTC 2022 - Paolo Stivanin <info@paolostivanin.com>
 
diff --git a/qalculate-qt.spec b/qalculate-qt.spec
index d2ecea8..d477bf7 100644
--- a/qalculate-qt.spec
+++ b/qalculate-qt.spec
@@ -25,12 +25,13 @@ Group:          Productivity/Scientific/Math
 URL:            https://qalculate.github.io
 Source0:        https://github.com/Qalculate/qalculate-qt/releases/download/v%{version}/qalculate-qt-%{version}.tar.gz
 BuildRequires:  automake
-BuildRequires:  c++_compiler
+BuildRequires:  gcc-c++
 BuildRequires:  intltool
 BuildRequires:  libnghttp2-devel
 BuildRequires:  libtool
 BuildRequires:  pkgconfig
-BuildRequires:  pkgconfig(Qt5Core) >= 5.6.0
+# compilation fails on 5.12.x
+BuildRequires:  pkgconfig(Qt5Core) >= 5.15.0
 BuildRequires:  pkgconfig(Qt5Widgets)
 BuildRequires:  pkgconfig(Qt5Network)
 BuildRequires:  libqt5-qtbase-devel
@@ -49,42 +50,51 @@ symbolic calculations (including integrals and equations), arbitrary
 precision, uncertainty propagation, interval arithmetic, plotting, and a
 user-friendly interface (QT, GTK+ and CLI).
 
-%lang_package
-
 %prep
 %autosetup -p1
 
 %build
-qmake-qt5 qalculate-qt.pro
-%make_build
+%qmake5 PREFIX=%{_prefix}
+make %{?_smp_mflags}
 
 %install
-%find_lang %{name}
-%make_install
+%qmake5_install
 
 %files
 %license COPYING
-%doc AUTHORS ChangeLog README TODO
-%doc %{_datadir}/doc/%{name}
 %{_bindir}/%{name}
-%{_datadir}/metainfo/%{name}.appdata.xml
-%{_datadir}/applications/%{name}.desktop
+%{_datadir}/applications/io.github.Qalculate.qalculate-qt.desktop
+%dir %{_datadir}/icons/hicolor/16x16
+%dir %{_datadir}/icons/hicolor/16x16/apps
+%{_datadir}/icons/hicolor/16x16/apps/qalculate-qt.png
+%dir %{_datadir}/icons/hicolor/22x22
+%dir %{_datadir}/icons/hicolor/22x22/apps
+%{_datadir}/icons/hicolor/22x22/apps/qalculate-qt.png
+%dir %{_datadir}/icons/hicolor/32x32
+%dir %{_datadir}/icons/hicolor/32x32/apps
+%{_datadir}/icons/hicolor/32x32/apps/qalculate-qt.png
+%dir %{_datadir}/icons/hicolor/64x64
+%dir %{_datadir}/icons/hicolor/64x64/apps
+%{_datadir}/icons/hicolor/64x64/apps/qalculate-qt.png
+%dir %{_datadir}/icons/hicolor/128x128
+%dir %{_datadir}/icons/hicolor/128x128/apps
+%{_datadir}/icons/hicolor/128x128/apps/qalculate-qt.png
+%dir %{_datadir}/icons/hicolor/scalable
+%dir %{_datadir}/icons/hicolor/scalable/apps
+%{_datadir}/icons/hicolor/scalable/apps/qalculate-qt.svg
 %{_mandir}/man?/%{name}.?%{ext_man}
-
-%{_libexecdir}/qalculate-search-provider
-
-%{_datadir}/dbus-1/services/io.github.Qalculate.SearchProvider.service
-
-%{_datadir}/icons/hicolor/128x128/apps/qalculate.png
-%{_datadir}/icons/hicolor/16x16/apps/qalculate.png
-%{_datadir}/icons/hicolor/22x22/apps/qalculate.png
-%{_datadir}/icons/hicolor/24x24/apps/qalculate.png
-%{_datadir}/icons/hicolor/256x256/apps/qalculate.png
-%{_datadir}/icons/hicolor/32x32/apps/qalculate.png
-%{_datadir}/icons/hicolor/48x48/apps/qalculate.png
-%{_datadir}/icons/hicolor/64x64/apps/qalculate.png
-%{_datadir}/icons/hicolor/scalable/apps/qalculate.svg
-
-%files lang -f %{name}.lang
+%{_datadir}/metainfo/io.github.Qalculate.qalculate-qt.metainfo.xml
+%dir %{_datadir}/qalculate-qt
+%dir %{_datadir}/qalculate-qt/translations
+%{_datadir}/qalculate-qt/translations/qalculate-qt_ca.qm
+%{_datadir}/qalculate-qt/translations/qalculate-qt_de.qm
+%{_datadir}/qalculate-qt/translations/qalculate-qt_es.qm
+%{_datadir}/qalculate-qt/translations/qalculate-qt_fr.qm
+%{_datadir}/qalculate-qt/translations/qalculate-qt_nl.qm
+%{_datadir}/qalculate-qt/translations/qalculate-qt_pt_BR.qm
+%{_datadir}/qalculate-qt/translations/qalculate-qt_ru.qm
+%{_datadir}/qalculate-qt/translations/qalculate-qt_sl.qm
+%{_datadir}/qalculate-qt/translations/qalculate-qt_sv.qm
+%{_datadir}/qalculate-qt/translations/qalculate-qt_zh_CN.qm
 
 %changelog