diff --git a/server.js b/server.js
index cd6f5c2..4e2a5b2 100644
--- a/server.js
+++ b/server.js
@@ -105,13 +105,13 @@ io.on('connection', (client) => {
                 io.emit('action', { action: 'setPixels', pixels: sensehat.led.pixels })
                 break
             case 'turnLeft':
-                var r = ((Number(sensehat.led.rotation) - 90) + 360) % 360
+                var r = (Number(sensehat.led.rotation) + 90) % 360
                 sensehat.led.rotation = r
                 sensehat.led.setRotation()
                 // io.emit('action', { action: 'setPixels', pixels: sensehat.led.pixels })
                 break
             case 'turnRight':
-                var r = (Number(sensehat.led.rotation) + 90) % 360
+                var r = (Number(sensehat.led.rotation) + 360 - 90) % 360
                 sensehat.led.rotation = r
                 sensehat.led.setRotation(r)
                 // io.emit('action', { action: 'setPixels', pixels: sensehat.led.pixels })