diff --git a/hdf5.changes b/hdf5.changes
index ca601cf..a70f065 100644
--- a/hdf5.changes
+++ b/hdf5.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Mon Jul  3 12:53:05 UTC 2017 - badshah400@gmail.com
+
+- Add libsz2-devel to list of Requires for -devel packages, this
+  is required for compilation against hdf5 when szlib support is
+  enabled.
+- Minor specfile cleanups using spec-cleaner.
+
 -------------------------------------------------------------------
 Fri Jun 16 21:13:30 UTC 2017 - junghans@votca.org
 
diff --git a/hdf5.spec b/hdf5.spec
index efe87da..ac14738 100644
--- a/hdf5.spec
+++ b/hdf5.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package hdf5
 #
-# Copyright (c) 2016 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -24,7 +24,6 @@
 %endif
 
 %define _mpi %{?_openmpi:openmpi} %{?_mvapich2:mvapich2}
-
 # TODO: The so numbers autodetected by update_so_version.sh
 # do not match the so numbers that are actually buit.
 %define sonum 100
@@ -59,14 +58,13 @@ Patch5:         hdf5-ldouble-ppc64le.patch
 Patch6:         hdf5-buildcompare.patch
 Patch7:         hdf5-mpi.patch
 Patch8:         hdf5_disable_testphdf5.patch
-BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildRequires:  fdupes
 BuildRequires:  gcc-c++
 BuildRequires:  gcc-fortran
 BuildRequires:  krb5-devel
+BuildRequires:  libsz2-devel
 BuildRequires:  openssl-devel
 BuildRequires:  zlib-devel
-BuildRequires:  libsz2-devel
 %if 0%{?_openmpi}
 BuildRequires:  openmpi-devel
 %endif
@@ -79,6 +77,7 @@ Requires:       libhdf5_fortran%{sonum_F} = %{version}
 Requires:       libhdf5_hl%{sonum_HL} = %{version}
 Requires:       libhdf5_hl_cpp%{sonum_HL_CXX} = %{version}
 Requires:       libhdf5hl_fortran%{sonum_HL_F} = %{version}
+BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description
 HDF5 is a data model, library, and file format for storing and
@@ -570,6 +569,7 @@ Summary:        Development files for %{name}
 Group:          Development/Libraries/Other
 Requires:       %{name} = %{version}
 Requires:       %{name}-devel-data = %{version}
+Requires:       libsz2-devel
 # Required by Fortran programs?
 Requires:       libhdf5-%{sonum} = %{version}
 Requires:       libhdf5_cpp%{sonum_CXX} = %{version}
@@ -604,6 +604,7 @@ Summary:        Development files for %{name}-openmpi
 Group:          Development/Libraries/Parallel
 Requires:       %{name}-devel-data = %{version}
 Requires:       %{name}-openmpi = %{version}
+Requires:       libsz2-devel
 # Required by Fortran programs?
 Requires:       libhdf5-%{sonum}-openmpi = %{version}
 Requires:       libhdf5_fortran%{sonum_F}-openmpi = %{version}
@@ -636,6 +637,7 @@ Summary:        Development files for %{name}-mvapich2
 Group:          Development/Libraries/Parallel
 Requires:       %{name}-devel-data = %{version}
 Requires:       %{name}-mvapich2 = %{version}
+Requires:       libsz2-devel
 # Required by Fortran programs?
 Requires:       libhdf5-%{sonum}-mvapich2 = %{version}
 Requires:       libhdf5_fortran%{sonum_F}-mvapich2 = %{version}
@@ -769,7 +771,7 @@ processing, visualization, and archiving.
 This package provides examples of HDF5 library use.
 
 %prep
-%setup -q -n %name-%version-patch1
+%setup -q -n %{name}-%{version}-patch1
 %patch0 -p1 -b .LD_LIBRARY_PATH
 %patch1 -p0 -b .non_void_return
 %patch2 -p0 -b .abort_unknown_host_config
@@ -781,8 +783,8 @@ This package provides examples of HDF5 library use.
 %patch7 -p1
 %patch8 -p1
 
-echo "prepare parallel builds: %_mpi"
-for build_dir in build %_mpi; do
+echo "prepare parallel builds: %{_mpi}"
+for build_dir in build %{_mpi}; do
     mkdir $build_dir
     ln -s ../configure $build_dir
 done
@@ -793,7 +795,7 @@ export CXX=g++
 export F9X=gfortran
 # workaround for known gcc issue, see RELEASE.txt
 if gcc --version |grep -q " 4\.[68]"; then
-	export CFLAGS="${RPM_OPT_FLAGS/-O2/-O0}"
+	export CFLAGS="%{optflags}/-O2/-O0}"
 fi
 %ifarch %arm
 # we want to have useful H5_CFLAGS on arm too
@@ -828,19 +830,19 @@ pushd build
 make V=1 %{?_smp_mflags}
 popd
 
-for mpi in %_mpi;
+for mpi in %{_mpi};
 do
 pushd $mpi
 export CC="%{_libdir}/mpi/gcc/$mpi/bin/mpicc"
 export FC="%{_libdir}/mpi/gcc/$mpi/bin/mpif90"
 export F77="%{_libdir}/mpi/gcc/$mpi/bin/mpif77"
-export LD_LIBRARY_PATH="%{_libdir}/mpi/gcc/$mpi/%_lib"
+export LD_LIBRARY_PATH="%{_libdir}/mpi/gcc/$mpi/%{_lib}"
 %configure \
   --docdir=%{_docdir}/%{name} \
   --prefix=%{_libdir}/mpi/gcc/$mpi \
   --exec-prefix=%{_libdir}/mpi/gcc/$mpi \
   --bindir=%{_libdir}/mpi/gcc/$mpi/bin \
-  --libdir=%{_libdir}/mpi/gcc/$mpi/%_lib \
+  --libdir=%{_libdir}/mpi/gcc/$mpi/%{_lib} \
   --datadir=%{_libdir}/mpi/gcc/$mpi/share \
   --includedir=%{_libdir}/mpi/gcc/$mpi/include \
   --disable-dependency-tracking \
@@ -861,11 +863,11 @@ done
 %install
 # install serial and parallel builds, (the serial one will win in case of
 # duplicate files)
-for build_dir in %_mpi build; do
-	make install DESTDIR="%buildroot" -C "$build_dir"
+for build_dir in %{_mpi} build; do
+	make install DESTDIR=%{buildroot} -C "$build_dir"
 done
 
-find "%buildroot/%{_libdir}" -type f -name "*.la" | xargs rm -f
+find %{buildroot} -type f -name "*.la" -delete -print
 find %{buildroot}%{_datadir}/hdf5_examples -type f \
                  | grep -v ".sh$" | xargs chmod 644
 # delete examples from parallel builds
@@ -889,40 +891,32 @@ EOF
 # default timeout is 1200 seconds
 export HDF5_ALARM_SECONDS=3600
 %endif
-make -C build check
+make %{?_smp_mflags} -C build check
 export HDF5_Make_Ignore=yes
-for mpi in %_mpi; do
+for mpi in %{_mpi}; do
     make -C $mpi check
 done
 
 %post -n libhdf5-%{sonum} -p /sbin/ldconfig
 %postun -n libhdf5-%{sonum} -p /sbin/ldconfig
-
 %post -n libhdf5_hl%{sonum_HL} -p /sbin/ldconfig
 %postun -n libhdf5_hl%{sonum_HL} -p /sbin/ldconfig
-
 %post -n libhdf5_cpp%{sonum_CXX} -p /sbin/ldconfig
 %postun -n libhdf5_cpp%{sonum_CXX} -p /sbin/ldconfig
-
 %post -n libhdf5_hl_cpp%{sonum_HL_CXX} -p /sbin/ldconfig
 %postun -n libhdf5_hl_cpp%{sonum_HL_CXX} -p /sbin/ldconfig
-
 %post -n libhdf5_fortran%{sonum_F} -p /sbin/ldconfig
 %postun -n libhdf5_fortran%{sonum_F} -p /sbin/ldconfig
-
 %post -n libhdf5hl_fortran%{sonum_HL_F} -p /sbin/ldconfig
 %postun -n libhdf5hl_fortran%{sonum_HL_F} -p /sbin/ldconfig
 
 %if 0%{?_openmpi}
 %post -n libhdf5-%{sonum}-openmpi -p /sbin/ldconfig
 %postun -n libhdf5-%{sonum}-openmpi -p /sbin/ldconfig
-
 %post -n libhdf5_hl%{sonum_HL}-openmpi -p /sbin/ldconfig
 %postun -n libhdf5_hl%{sonum_HL}-openmpi -p /sbin/ldconfig
-
 %post -n libhdf5_fortran%{sonum_F}-openmpi -p /sbin/ldconfig
 %postun -n libhdf5_fortran%{sonum_F}-openmpi -p /sbin/ldconfig
-
 %post -n libhdf5hl_fortran%{sonum_HL_F}-openmpi -p /sbin/ldconfig
 %postun -n libhdf5hl_fortran%{sonum_HL_F}-openmpi -p /sbin/ldconfig
 %endif
@@ -930,13 +924,10 @@ done
 %if 0%{?_mvapich2}
 %post -n libhdf5-%{sonum}-mvapich2 -p /sbin/ldconfig
 %postun -n libhdf5-%{sonum}-mvapich2 -p /sbin/ldconfig
-
 %post -n libhdf5_hl%{sonum_HL}-mvapich2 -p /sbin/ldconfig
 %postun -n libhdf5_hl%{sonum_HL}-mvapich2 -p /sbin/ldconfig
-
 %post -n libhdf5_fortran%{sonum_F}-mvapich2 -p /sbin/ldconfig
 %postun -n libhdf5_fortran%{sonum_F}-mvapich2 -p /sbin/ldconfig
-
 %post -n libhdf5hl_fortran%{sonum_HL_F}-mvapich2 -p /sbin/ldconfig
 %postun -n libhdf5hl_fortran%{sonum_HL_F}-mvapich2 -p /sbin/ldconfig
 %endif