diff --git a/scalasca.spec b/scalasca.spec
index ac14eff..1a57595 100644
--- a/scalasca.spec
+++ b/scalasca.spec
@@ -31,7 +31,7 @@ URL:		http://www.scalasca.org/
 Source0:	http://apps.fz-juelich.de/scalasca/releases/scalasca/%shortver/dist/%name-%version.tar.gz
 
 BuildRequires:	otf2-devel >= 2.0, cube-devel >= 4.3
-BuildRequires:	zlib-devel openmpi-devel chrpath
+BuildRequires:	zlib-devel openmpi-devel chrpath gcc-c++
 %if %{with mpich}
 BuildRequires:	mpich-devel
 %endif
@@ -89,8 +89,6 @@ rm -r vendor/cubew vendor/otf2	# bundled libraries
 
 
 %build
-# -std=gnu++98 to enable build with gcc6
-export MPI_CXXFLAGS=-std=gnu++98 CXXFLAGS=-std=gnu++98
 %global _configure ../configure
 %global do_build \
 %configure --with-otf2 --with-cube --enable-shared --libdir=$MPI_LIB \\\
@@ -173,10 +171,14 @@ make check VERBOSE=1
 
 
 %changelog
+* Sat Jul 21 2018 Dave Love <loveshack@fedoraproject.org> - 2.4-2
+- BR gcc-c++ (#1606306)
+- Remove unnecessary -std=gnu++98
+
 * Sat Jul 14 2018 Fedora Release Engineering <releng@fedoraproject.org> - 2.4-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild
 
-* Tue Jun 19 2018 Dave Love <loveshack@fedoraproject.org> - 2.4-6
+* Tue Jun 19 2018 Dave Love <loveshack@fedoraproject.org> - 2.4-1
 - New version (#1578180)
 
 * Fri Feb 09 2018 Fedora Release Engineering <releng@fedoraproject.org> - 2.3.1-6