diff --git a/src/runtime-three/first-person-navigation-controller.ts b/src/runtime-three/first-person-navigation-controller.ts
index 36db3cad..ecb0ee3c 100644
--- a/src/runtime-three/first-person-navigation-controller.ts
+++ b/src/runtime-three/first-person-navigation-controller.ts
@@ -102,17 +102,17 @@ export class FirstPersonNavigationController implements NavigationController {
     let horizontalX = 0;
     let horizontalZ = 0;
 
-    if (inputLength > 0) {
-      const normalizedInputX = inputX / inputLength;
-      const normalizedInputZ = inputZ / inputLength;
-      const moveDistance = MOVE_SPEED * dt;
+      if (inputLength > 0) {
+        const normalizedInputX = inputX / inputLength;
+        const normalizedInputZ = inputZ / inputLength;
+        const moveDistance = MOVE_SPEED * dt;
 
-      this.forwardVector.set(Math.sin(this.yawRadians), 0, Math.cos(this.yawRadians));
-      this.rightVector.set(Math.cos(this.yawRadians), 0, -Math.sin(this.yawRadians));
+        this.forwardVector.set(Math.sin(this.yawRadians), 0, Math.cos(this.yawRadians));
+        this.rightVector.set(-Math.cos(this.yawRadians), 0, Math.sin(this.yawRadians));
 
-      horizontalX = (this.forwardVector.x * normalizedInputZ + this.rightVector.x * normalizedInputX) * moveDistance;
-      horizontalZ = (this.forwardVector.z * normalizedInputZ + this.rightVector.z * normalizedInputX) * moveDistance;
-    }
+        horizontalX = (this.forwardVector.x * normalizedInputZ + this.rightVector.x * normalizedInputX) * moveDistance;
+        horizontalZ = (this.forwardVector.z * normalizedInputZ + this.rightVector.z * normalizedInputX) * moveDistance;
+      }
 
     this.verticalVelocity -= GRAVITY * dt;