diff --git a/varnish.changes b/varnish.changes
index 9221c50..cd5c686 100644
--- a/varnish.changes
+++ b/varnish.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Oct  4 21:48:01 UTC 2013 - jengelh@inai.de
+
+- Deactivate libpcre JIT (bnc#839358)
+
 -------------------------------------------------------------------
 Sun Sep 23 21:30:35 UTC 2012 - nmo.marques@gmail.com
 
diff --git a/varnish.spec b/varnish.spec
index 1d0ed89..00e2963 100644
--- a/varnish.spec
+++ b/varnish.spec
@@ -97,9 +97,8 @@ This package holds the development files for varnish.
 %setup -q
 
 %build
-%if 0%{?suse_version} > 1000
-export CFLAGS="%optflags -fstack-protector"
-%endif
+# bnc#839358: Force-deactivate JIT
+export CFLAGS="%optflags -fstack-protector -DPCRE_STUDY_JIT_COMPILE=0"
 %configure --disable-static \
            --localstatedir=%_localstatedir/cache/ \
            --enable-developer-warnings