diff --git a/server/World.cpp b/server/World.cpp
index 55376a2..b54f907 100644
--- a/server/World.cpp
+++ b/server/World.cpp
@@ -84,6 +84,9 @@ boost::asio::awaitable<void> Playfield::updateRobot(const Connection::Client *se
     if (localRobot->health() != newRobot.health()) {
         throw Connection::Error("Can't change value", Generic::Error::IllegalOperation);
     }
+    if (newRobot.position().x() > 1.0f || newRobot.position().x() < 0.0f || newRobot.position().y() > 1.0f || newRobot.position().y() < 0.0f) {
+        throw Connection::Error("Position is out of range", Generic::Error::OutOfRange);
+    }
     // Apply heal
     if (newRobot.state() == Generic::Robot::Heal) {
         newRobot.set_health(localRobot->health() + settings.healperturn());