diff --git a/index.js b/index.js
index 158d0151..5a4d3be1 100644
--- a/index.js
+++ b/index.js
@@ -289,7 +289,7 @@ const createClient = (profile, request = _request) => {
 		})
 	}
 
-	const radar = (north, west, south, east, opt) => {
+	const radar = ({north, west, south, east, opt}) => {
 		if ('number' !== typeof north) throw new Error('north must be a number.')
 		if ('number' !== typeof west) throw new Error('west must be a number.')
 		if ('number' !== typeof south) throw new Error('south must be a number.')
diff --git a/test/insa.js b/test/insa.js
index 28679120..61df17fd 100644
--- a/test/insa.js
+++ b/test/insa.js
@@ -341,7 +341,7 @@ test('radar', co(function* (t) {
 	const west = 11.600826
 	const south = 52.108486
 	const east = 11.651451
-	const vehicles = yield client.radar(north, west, south, east, {
+	const vehicles = yield client.radar({north, west, south, east}, {
 		duration: 5 * 60, when, results: 10
 	})
 
diff --git a/test/oebb.js b/test/oebb.js
index 7427b6db..80e1d92e 100644
--- a/test/oebb.js
+++ b/test/oebb.js
@@ -450,7 +450,12 @@ test('location', co(function* (t) {
 }))
 
 test('radar Salzburg', co(function* (t) {
-	const vehicles = yield client.radar(47.827203, 13.001261, 47.773278, 13.07562, {
+	const vehicles = yield client.radar({
+		north: 47.827203,
+		west: 13.001261,
+		south: 47.773278,
+		east: 13.07562
+	}, {
 		duration: 5 * 60, when
 	})
 
diff --git a/test/vbb.js b/test/vbb.js
index 778c432b..f2fedf6a 100644
--- a/test/vbb.js
+++ b/test/vbb.js
@@ -456,7 +456,12 @@ test('location', co(function* (t) {
 
 
 test('radar', co(function* (t) {
-	const vehicles = yield client.radar(52.52411, 13.41002, 52.51942, 13.41709, {
+	const vehicles = yield client.radar({
+		north: 52.52411,
+		west: 13.41002,
+		south: 52.51942,
+		east: 13.41709
+	}, {
 		duration: 5 * 60, when
 	})