diff --git a/crazyflie/scripts/crazyflie_server.py b/crazyflie/scripts/crazyflie_server.py
index 90c476313..b47c636af 100755
--- a/crazyflie/scripts/crazyflie_server.py
+++ b/crazyflie/scripts/crazyflie_server.py
@@ -543,7 +543,7 @@ def _log_odom_data_callback(self, timestamp, data, logconf, uri):
         pitch = radians(data.get('stabilizer.pitch'))
         vx = data.get('kalman.statePX')
         vy = data.get('kalman.statePY')
-        vz = data.get('kalman.statePY')
+        vz = data.get('kalman.statePZ')
         yawrate = data.get('gyro.z')
         rollrate = data.get('gyro.x')
         pitchrate = data.get('gyro.y')