diff --git a/contrib/jenkins.sh b/contrib/jenkins.sh
index dbdfda6..7d68736 100755
--- a/contrib/jenkins.sh
+++ b/contrib/jenkins.sh
@@ -14,10 +14,7 @@
 
 autoreconf --install --force
 ./configure --enable-werror
-
-# Parallel make is disabled due to a race condition. On Jenkins, it often
-# aborts the build with: "asn1p_y.y:357:13: error: 'param' undeclared"
-$MAKE -j1
+$MAKE $PARALLEL_MAKE
 $MAKE distcheck \
   || cat-testlogs.sh