diff --git a/jemalloc.spec b/jemalloc.spec
index 59564d1..1a7fb10 100644
--- a/jemalloc.spec
+++ b/jemalloc.spec
@@ -1,7 +1,7 @@
 Name:           jemalloc
 Version:        3.6.0
 
-Release:        5%{?dist}
+Release:        6%{?dist}
 Summary:        General-purpose scalable concurrent malloc implementation
 
 Group:          System Environment/Libraries
@@ -47,8 +47,10 @@ developing applications that use %{name}.
 
 %build
 %ifarch i686
+%if 0%{?fedora} >= 21
 CFLAGS="%{optflags} -msse2"
 %endif
+%endif
 %configure
 make %{?_smp_mflags}
 
@@ -94,6 +96,9 @@ rm -rf %{buildroot}
 %postun -p /sbin/ldconfig
 
 %changelog
+* Fri Aug 15 2014 Ingvar Hagelund <ingvar@redpill-linpro.com> - 3.6.0-6
+- bz #1106933 fix only for fedora 21 and above
+
 * Fri Aug 15 2014 Ingvar Hagelund <ingvar@redpill-linpro.com> - 3.6.0-5
 - Added valgrind-devel to BuildRequires, fixing bz #974270