diff --git a/sdk_container/src/third_party/coreos-overlay/sec-policy/selinux-base/selinux-base-2.20200818-r2.ebuild b/sdk_container/src/third_party/coreos-overlay/sec-policy/selinux-base/selinux-base-2.20200818-r2.ebuild
index 6546c608fb..c660017ef1 100644
--- a/sdk_container/src/third_party/coreos-overlay/sec-policy/selinux-base/selinux-base-2.20200818-r2.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/sec-policy/selinux-base/selinux-base-2.20200818-r2.ebuild
@@ -81,7 +81,11 @@ src_configure() {
 
 	# Prepare initial configuration
 	cd "${S}/refpolicy" || die
-	emake conf
+	# Parallel make fails with:
+	#   python3 -t -t -E -W error support/sedoctool.py -b policy/booleans.conf -m policy/modules.conf -x doc/policy.xml
+	#   support/sedoctool.py exiting for: Error while parsing xml
+	#   make: *** [Makefile:415: conf.intermediate] Error 1
+	emake -j1 conf
 
 	# Setup the policies based on the types delivered by the end user.
 	# These types can be "targeted", "strict", "mcs" and "mls".