diff --git a/simspark.spec b/simspark.spec
index 828c37e..f767a68 100644
--- a/simspark.spec
+++ b/simspark.spec
@@ -1,6 +1,6 @@
 Name:           simspark
 Version:        0.2.4
-Release:        19%{?dist}
+Release:        20%{?dist}
 Summary:        Spark physical simulation system
 
 Group:          Development/Libraries
@@ -40,7 +40,7 @@ developing applications that use %{name}.
 %build
 mkdir build
 cd build
-export CXXFLAGS="${CXXFLAGS:-%optflags}"
+export CXXFLAGS="${CXXFLAGS:-%optflags} -std=gnu++98"
 export CFLAGS="${CFLAGS:-%optflags}"
 cmake -DCMAKE_INSTALL_PREFIX=%{_prefix} -DLIBDIR:PATH=%{_lib} -DODE_CONFIG_EXEC=ode-double-config .. \
   -DRUBY_INCLUDE_PATH=`ruby -e 'puts File.join(RbConfig::CONFIG[%q(includedir)], RbConfig::CONFIG[%q(sitearch)])'`
@@ -75,6 +75,9 @@ rm -rf %{buildroot}/%{_datadir}/doc
 %doc doc/devel/howtos doc/devel/manual.pdf
 
 %changelog
+* Thu Mar 03 2016 Hedayat Vatankhah <hedayat.fwd+rpmchlog@gmail.com> - 0.2.4-20
+- Fix compilation on GCC 6.0
+
 * Fri Feb 05 2016 Fedora Release Engineering <releng@fedoraproject.org> - 0.2.4-19
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild