diff --git a/varnish.spec b/varnish.spec
index f37b26f..ec7aaff 100644
--- a/varnish.spec
+++ b/varnish.spec
@@ -99,8 +99,7 @@ This package holds the development files for varnish.
 %patch -P 1 -p1
 
 %build
-# bnc#839358: Force-deactivate JIT
-export CFLAGS="%optflags -fstack-protector -DPCRE_STUDY_JIT_COMPILE=0"
+export CFLAGS="%optflags -fstack-protector"
 %configure --disable-static \
            --localstatedir=%_localstatedir/cache/ \
            --enable-developer-warnings