diff --git a/.gitignore b/.gitignore
index c33a412..608ddb4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@ qjackctl-0.3.6.tar.gz
 /qjackctl-0.5.4.tar.gz
 /qjackctl-0.5.5.tar.gz
 /qjackctl-0.6.2.tar.gz
+/qjackctl-0.6.3.tar.gz
diff --git a/qjackctl.spec b/qjackctl.spec
index b2a6ae2..8e262d5 100644
--- a/qjackctl.spec
+++ b/qjackctl.spec
@@ -1,14 +1,12 @@
 Summary:       Qt based JACK control application
 Name:          qjackctl
-Version:       0.6.2
-Release:       2%{?dist}
+Version:       0.6.3
+Release:       1%{?dist}
 URL:           http://qjackctl.sourceforge.net
 Source0:       http://downloads.sourceforge.net/qjackctl/files/%{name}-%{version}.tar.gz
 License:       GPLv2+
 Requires:      hicolor-icon-theme
 
-Source20:      qmake-qt5.sh
-
 # Appdata fix. Upstreamable
 Patch0:        qjackctl-appdata-fix.patch
 
@@ -19,6 +17,8 @@ BuildRequires: jack-audio-connection-kit-devel
 BuildRequires: portaudio-devel
 BuildRequires: qt5-qttools-devel
 BuildRequires: qt5-qtx11extras-devel
+BuildRequires: libappstream-glib
+
 
 %description
 Qjackctl is a simple application to control the JACK sound server daemon,
@@ -26,7 +26,8 @@ specific for the Linux Audio Desktop infrastructure. It provides a simple GUI
 dialog for setting several JACK daemon parameters, which are properly saved
 between sessions, and a way to control the status of the audio server daemon.
 With time, this primordial interface has become richer by including a enhanced
-patchbay and connection control features.
+patch bay and connection control features.
+
 
 %prep
 %setup -q
@@ -38,22 +39,21 @@ sed -i.ac_with_paths -e "s|^ac_with_paths=.*|ac_with_paths=|g" configure
 
 
 %build
-CFLAGS="%{optflags}"; export CFLAGS
-CXXFLAGS="%{optflags}"; export CXXFLAGS
-LDFLAGS="%{?__global_ldflags}"; export LDFLAGS
-
-# force use of custom/local qmake, to inject proper build flags (above)
-install -m755 -D %{SOURCE20} bin/qmake-qt5
-PATH=`pwd`/bin:%{_qt5_bindir}:$PATH; export PATH
+%{set_build_flags}
 
 %configure \
-           --enable-jack-version \
-           --localedir=%{_datadir}/%{name}/locale/
+  --enable-jack-version \
+  --localedir=%{_datadir}/%{name}/locale/ \
+  --enable-debug
+
+%{make_build}
+
+%check
+appstream-util validate-relax --nonet %{buildroot}%{_datadir}/metainfo/qjackctl.appdata.xml
 
-make %{?_smp_mflags} QMAKE=`pwd`/bin/qmake-qt5
 
 %install
-make DESTDIR=%{buildroot} install
+%{make_install}
 
 desktop-file-install \
   %{buildroot}%{_datadir}/applications/qjackctl.desktop
@@ -72,7 +72,11 @@ desktop-file-install \
 %{_mandir}/man1/%{name}*
 %{_datadir}/metainfo/qjackctl.appdata.xml
 
+
 %changelog
+* Tue Sep 29 2020 Christoph Karl <pampelmuse [AT] gmx [DOT] at> - 0.6.3-1
+- New version
+
 * Wed Jul 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.6.2-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
 
diff --git a/qmake-qt5.sh b/qmake-qt5.sh
deleted file mode 100755
index 09d9fe6..0000000
--- a/qmake-qt5.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/bin/sh
-
-/usr/bin/qmake-qt5 \
-  "$@" \
-  QMAKE_CFLAGS_RELEASE="${CFLAGS}" \
-  QMAKE_CXXFLAGS_RELEASE="${CXXFLAGS}" \
-  QMAKE_LFLAGS_RELEASE="${LDFLAGS}" \
-  QMAKE_STRIP=
diff --git a/sources b/sources
index 331b4fc..23ab1d7 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (qjackctl-0.6.2.tar.gz) = a05f514d749b4f2344c7f0d57a2a0dd1ac6a97f35d0227827e78d3bd7abfbddc3201e2fc7e23f878cd318e408f169a4006a150dc0e43101086e9ba32004e5520
+SHA512 (qjackctl-0.6.3.tar.gz) = 72a9218b3b8a6b72470656e774f5cfbfe6670059e9f1a85a394345f4689c5d5c05af23b5e37d5f8dfc6159e591f64249006936069dde1632ef9d74b6f8355e0b