diff --git a/sagemath-libgap.patch b/sagemath-libgap.patch
index 1ba2a10..8b66516 100644
--- a/sagemath-libgap.patch
+++ b/sagemath-libgap.patch
@@ -6,7 +6,7 @@ diff -up src/sage/env.py.orig src/sage/env.py
  _add_variable_or_fallback('ELLCURVE_DATA_DIR',opj('$SAGE_SHARE','ellcurves'))
  _add_variable_or_fallback('POLYTOPE_DATA_DIR',opj('$SAGE_SHARE','reflexive_polytopes'))
 -_add_variable_or_fallback('GAP_ROOT_DIR',     opj('$SAGE_LOCAL','gap','latest'))
-+_add_variable_or_fallback('GAP_ROOT_DIR',     opj('usr','lib','gap'))
++_add_variable_or_fallback('GAP_ROOT_DIR',     opj('/usr','lib','gap'))
  _add_variable_or_fallback('THEBE_DIR',        opj('$SAGE_SHARE','thebe'))
  
  # locate singular shared object
@@ -18,7 +18,7 @@ diff -up src/sage/interfaces/gap.py.orig src/sage/interfaces/gap.py
  WORKSPACE = gap_workspace_file()
  
 -GAP_BINARY = os.path.join(SAGE_LOCAL, 'bin', 'gap')
-+GAP_BINARY = os.path.join('usr', 'bin', 'gap')
++GAP_BINARY = os.path.join('/usr', 'bin', 'gap')
  
  first_try = True
  
diff --git a/sagemath.spec b/sagemath.spec
index 512afdd..d0c0132 100644
--- a/sagemath.spec
+++ b/sagemath.spec
@@ -21,7 +21,7 @@
 # not functional due to missing jar dependencies
 %bcond_with sage3d
 
-# use an workaround to match upstream sagemath patched sphinx
+# use a workaround to match upstream sagemath patched sphinx
 %bcond_without sphinx_hack
 
 # use workaround to match upstream sagemath patched cython
@@ -86,7 +86,7 @@
 Name:		sagemath
 Summary:	A free open-source mathematics software system
 Version:	8.3
-Release:	2%{?dist}
+Release:	3%{?dist}
 # The file ${SAGE_ROOT}/COPYING.txt is the upstream license breakdown file
 # Additionally, every $files section has a comment with the license name
 # before files with that license
@@ -367,6 +367,7 @@ Requires:	gap-pkg-sonata
 Requires:	gap-pkg-toric
 Requires:	gfan
 Requires:	gmp-ecm
+Requires:	hicolor-icon-theme
 Requires:	jmol
 Requires:	jsmol
 Requires:	jsmath-fonts
@@ -472,7 +473,6 @@ packages into a common Python-based interface.
 %package	core
 Summary:	Open Source Mathematics Software
 Requires:	%{name}%{?_isa} = %{version}-%{release}
-Obsoletes:	%{name}-devel < 6.8-1
 %if %{with bundled_ipython}
 Provides:	bundled(ipython) = %(cut -d- -f2- <<< %{ipython_pkg})
 %endif
@@ -539,7 +539,6 @@ Includes two databases:
 %package	data-etc
 Summary:	Extcode for Sagemath
 Requires:	%{name}-data = %{version}-%{release}
-Obsoletes:      %{name}-data-extcode < %{version}
 BuildArch:	noarch
 
 %description	data-etc
@@ -678,7 +677,7 @@ Summary:	Several programs for working with Rubik's cubes
 Requires:	%{name}%{?_isa} = %{version}-%{release}
 
 %description	rubiks
-Several programs for working with Rubik's cubes, by three  different people.
+Several programs for working with Rubik's cubes, by three different people.
 In summary the three contributors are:
 
 Michael Reid (GPL) http://www.math.ucf.edu/~reid/Rubik/optimal_solver.html
@@ -1428,9 +1427,8 @@ ln -sf %{SAGE_SHARE} $SAGE_ROOT/share
 ln -sf src $SAGE_ROOT/devel
 
 # Install menu and icons
-pushd build/pkgs/sagenb/src/sagenb/data
-    install -p -m644 -D sage/images/icon128x128.png %{buildroot}%{_datadir}/pixmaps/%{name}.png
-popd
+install -p -m644 -D src/ext/notebook-ipython/logo.svg \
+  %{buildroot}%{_datadir}/icons/hicolor/scalable/apps/sagemath.svg
 mkdir -p %{buildroot}%{_datadir}/applications
 cat > %{buildroot}%{_datadir}/applications/%{name}.desktop << EOF
 [Desktop Entry]
@@ -1582,7 +1580,7 @@ rm -fr $DOT_SAGE
 %dir %{SAGE_PYTHONPATH}
 # GPLv2+
 %{_bindir}/sage
-%{_datadir}/pixmaps/%{name}.png
+%{_datadir}/icons/hicolor/scalable/apps/%{name}.svg
 %{_datadir}/applications/%{name}.desktop
 %{SAGE_SPKG_INST}
 %if %{with bundled_thebe}
@@ -1817,6 +1815,12 @@ rm -fr $DOT_SAGE
 
 ########################################################################
 %changelog
+* Tue Feb 19 2019 Jerry James <loganjerry@gmail.com> - 8.3-3
+- Fix -libgap patch (bz 1672015)
+- Install an SVG icon instead of a fixed size (128x128) icon
+- Require hicolor-icon-theme since we install an icon
+- Drop obsolete Obsoletes
+
 * Sat Jan 19 2019 Jerry James <loganjerry@gmail.com> - 8.3-2
 - Add -buildroot patch and only build cython interfaces once
 - Drop LANGUAGES variable setting, now ignored by the sagemath build system