diff --git a/libsbml.spec b/libsbml.spec
index 77c3262..9e144ec 100644
--- a/libsbml.spec
+++ b/libsbml.spec
@@ -55,7 +55,7 @@
 
 Name:           libsbml
 Version:        5.12.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Systems Biology Markup Language library
 
 License:        LGPLv2+
@@ -70,7 +70,7 @@ Patch1:         %{name}-fix_install_libpaths.patch
 ## http://sourceforge.net/p/sbml/libsbml/417/
 Patch2:         %{name}-fix_rewrite_pydoc.patch
 
-BuildRequires:  cmake, clang
+BuildRequires:  cmake
 BuildRequires:  zlib-devel
 BuildRequires:  bzip2-devel
 BuildRequires:  libxml2-devel >= 2.6.16
@@ -259,9 +259,6 @@ export CXXFLAGS="$RPM_OPT_FLAGS $RPM_LD_FLAGS -Wl,-z,now"
 # This build is only for Python 2
 %cmake -DENABLE_{LAYOUT,QUAL,COMP,FBC,RENDER}=ON \
 %if 0%{?fedora} > 22
-%ifarch x86_64 aarch64
-       -DCMAKE_CXX_COMPILER:FILEPATH=%{_bindir}/clang++ \
-%endif
        -DCSHARP_COMPILER:FILEPATH=%{_bindir}/mcs \
 %endif
        -DWITH_PYTHON:BOOL=ON \
@@ -285,9 +282,6 @@ export CFLAGS="$RPM_OPT_FLAGS $RPM_LD_FLAGS -Wl,-z,now"
 export CXXFLAGS="$RPM_OPT_FLAGS $RPM_LD_FLAGS -Wl,-z,now"
 %cmake -DENABLE_{LAYOUT,QUAL,COMP,FBC,RENDER}=ON \
 %if 0%{?fedora} > 22
-%ifarch x86_64 aarch64
-       -DCMAKE_CXX_COMPILER:FILEPATH=%{_bindir}/clang++ \
-%endif
        -DCSHARP_COMPILER:FILEPATH=%{_bindir}/mcs \
 %endif
 %if %{with python3}
@@ -490,6 +484,9 @@ ctest --force-new-ctest-process -V -E "test_ruby_binding"
 %endif
 
 %changelog
+* Fri Dec 11 2015 Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> - 5.12.0-2
+- Try to build without clang
+
 * Sat Nov 14 2015 Antonio Trande <sagitterATfedoraproject.org> - 5.12.0-1
 - Update to 5.12.0
 - Added patch(#2) for the formatter with Python3.5