diff --git a/generate-jetty-start.sh b/generate-jetty-start.sh
index a13fc939..4ee1af1c 100755
--- a/generate-jetty-start.sh
+++ b/generate-jetty-start.sh
@@ -5,10 +5,10 @@ if [ -z "$JETTY_START" ] ; then
 fi
 rm -f $JETTY_START
 		DRY_RUN=$(/docker-entrypoint.sh "$@" --dry-run)
-		echo "exec $DRY_RUN" \
+		DRY_RUN=$(echo "$DRY_RUN" \
 			| egrep '[^ ]*java .*org\.eclipse\.jetty\.xml\.XmlConfiguration ' \
-			| sed -e 's/ -Djava.io.tmpdir=[^ ]*//g' -e 's/\\$//' \
-			> $JETTY_START
+			| sed -e 's/ -Djava.io.tmpdir=[^ ]*//g' -e 's/\\$//')
+		echo "exec $DRY_RUN" > $JETTY_START
 
 		# If jetty.start doesn't have content then the dry-run failed.
 		if ! [ -s $JETTY_START ]; then