diff --git a/isl.changes b/isl.changes
index 4384738..cbe1eca 100644
--- a/isl.changes
+++ b/isl.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Jan 31 12:50:45 UTC 2018 - jengelh@inai.de
+
+- Set shared library RPM group. Use %make_install.
+
 -------------------------------------------------------------------
 Mon Jan 29 14:43:34 UTC 2018 - msrb@suse.com
 
diff --git a/isl.spec b/isl.spec
index 3c022de..7c866ea 100644
--- a/isl.spec
+++ b/isl.spec
@@ -45,11 +45,14 @@ Development tools and headers for the ISL.
 
 %package -n libisl%{islsover}
 Summary:        The ISL shared library
-Group:          Development/Languages/C and C++
+Group:          System/Libraries
 
 %description -n libisl%{islsover}
 The shared library for the ISL.
 
+ISL is a library for manipulating sets and relations of integer points
+bounded by linear constraints.
+
 %prep
 %setup -q
 
@@ -61,7 +64,7 @@ make %{?_smp_mflags} V=1
 make %{?_smp_mflags} check
 
 %install
-make DESTDIR=%{buildroot} install %{?_smp_mflags}
+%make_install
 rm -f  %{buildroot}%{_libdir}/*.la
 rm -f  %{buildroot}%{_libdir}/libisl.so.*-gdb.py