diff --git a/to_jetty.sh b/to_jetty.sh
index 832ea6c..fa6023e 100755
--- a/to_jetty.sh
+++ b/to_jetty.sh
@@ -3,9 +3,10 @@
 # Builds and deploys into Jetty; primarily for debugging
 
 jetty=$1
+fast=$2
 if [ -z "$jetty" ]
 then
-	echo >&2 "usage: $0 jettydir"
+	echo >&2 "usage: $0 jettydir [--fast]"
 	exit 1
 fi
 if ! [ -f "$jetty/etc/jetty.xml" ]
@@ -14,21 +15,32 @@
 	exit 1
 fi
 
-(cd appdist && mvn clean install) &&
-
-out=$(cd appdist/target/gerrit-*-bin.dir/gerrit-* && pwd) &&
 ctx="$jetty/contexts/gerrit.xml" &&
 
-cp $out/www/gerrit-*.war "$jetty/webapps/gerrit.war" &&
-
-if [ -f "$ctx" ]
+if [ -f "$ctx" -a -n "$fast" ]
 then
+	echo >&2 "warning: Using fast mode to build only GWT..."
+	echo >&2
+	(cd appjar && mvn install) &&
+	(cd appwar && mvn package) &&
+	cp appwar/target/gerrit-*.war "$jetty/webapps/gerrit.war" &&
 	touch "$ctx"
 else
-	cp $out/jdbc/c3p0-*.jar "$jetty/lib/plus" &&
-	cp $out/jdbc/postgresql-*jdbc*.jar "$jetty/lib/plus" &&
+	(cd appdist && mvn clean install) &&
+	out=$(cd appdist/target/gerrit-*-bin.dir/gerrit-* && pwd) &&
 
-	rm -f "$jetty/contexts/test.xml" &&
-	cp $out/www/jetty_gerrit.xml "$ctx" &&
-	echo "You need to edit and configure $ctx"
+	cp $out/www/gerrit-*.war "$jetty/webapps/gerrit.war" &&
+	if [ -f "$ctx" ]
+	then
+		touch "$ctx"
+	else
+		cp $out/jdbc/c3p0-*.jar "$jetty/lib/plus" &&
+		cp $out/jdbc/postgresql-*jdbc*.jar "$jetty/lib/plus" &&
+
+		rm -f "$jetty/contexts/test.xml" &&
+		cp $out/www/jetty_gerrit.xml "$ctx" &&
+
+		echo >&2 &&
+		echo >&2 "You need to edit and configure $ctx"
+	fi
 fi