diff --git a/varnish.spec b/varnish.spec
index dd8fc9c..3c4b894 100644
--- a/varnish.spec
+++ b/varnish.spec
@@ -17,7 +17,7 @@
 Summary: High-performance HTTP accelerator
 Name: varnish
 Version: 5.2.1
-Release: 3%{?v_rc}%{?dist}
+Release: 4%{?v_rc}%{?dist}
 License: BSD
 Group: System Environment/Daemons
 URL: http://www.varnish-cache.org/
@@ -164,6 +164,9 @@ export RST2MAN=/bin/true
 %configure --disable-static \
 %ifarch aarch64
   --with-jemalloc=no \
+%endif
+%ifarch x86_64 %arm
+  --disable-pcre-jit \
 %endif
   --localstatedir=/var/lib  \
   --docdir=%{?_pkgdocdir}%{!?_pkgdocdir:%{_docdir}/%{name}-%{version}}
@@ -205,7 +208,7 @@ sed -i "s,\${RPM_BUILD_ROOT}/../../BUILD/varnish\*,%{buildroot}%{_includedir}/%{
 %ifarch ppc64 ppc64le aarch64
 sed -i 's/48/128/g;' bin/varnishtest/tests/c00057.vtc
 %endif
-#make %{?_smp_mflags} check LD_LIBRARY_PATH="%{buildroot}%{_libdir}:%{buildroot}%{_libdir}/%{name}" VERBOSE=1
+make %{?_smp_mflags} check LD_LIBRARY_PATH="%{buildroot}%{_libdir}:%{buildroot}%{_libdir}/%{name}" VERBOSE=1
 
 %install
 rm -rf %{buildroot}
@@ -403,6 +406,11 @@ fi
 %endif
 
 %changelog
+* Thu Dec 21 2017 Ingvar Hagelund <ingvar@redpill-linpro.com> - 5.2.1-4
+- Disabled pcre-jit on x86_64 and arm in rawhide for now. It does not
+  work, and makes other varnish dependant packages crash
+  (upstream bug #2521)
+
 * Thu Nov 16 2017 Ingvar Hagelund <ingvar@redpill-linpro.com> - 5.2.1-3
 - Disabled running make check again. Too many timing issues. All tests run
   successfully on all arches from time to time, but seldom in a single