diff --git a/api/src/main/java/ru/dragonestia/msb3/api/math/Quaternion.java b/api/src/main/java/ru/dragonestia/msb3/api/math/Quaternion.java
index 3a010d7..bcce778 100644
--- a/api/src/main/java/ru/dragonestia/msb3/api/math/Quaternion.java
+++ b/api/src/main/java/ru/dragonestia/msb3/api/math/Quaternion.java
@@ -34,20 +34,13 @@ public record Quaternion(double x, double y, double z, double w) {
 
     public Quaternion rotate(Vec normal) {
         var defaultQuaternion = new Quaternion(0, 0, 0, 1);
+        var defaultVector = new Vec(0, 1, 0);
 
-        var feta_x = Math.atan(normal.z()/normal.y());
+        var feta = Math.acos(defaultVector.dot(normal));
+        var r = defaultVector.cross(normal).normalize();
+        var r_sin = r.mul(Math.sin(feta/2));
 
-        var q0 = new Quaternion((Math.sin(feta_x / 2)), 0, 0, (Math.cos(feta_x / 2)));
-        var q = q0.mul(defaultQuaternion);
-        var localPos = new Quaternion(0, 1, 0, 0);
-        var qvq0 = q0.mul(localPos);
-        var qvq = qvq0.mul(q0.conjugate());
-        var q_vector = new Vec(qvq.x(), qvq.y(), qvq.z()).normalize();
-
-        var multiply = normal.x() > q_vector.x() ? -1 : 1;
-        var feta_z = Math.acos(q_vector.dot(normal));
-
-        var q1 = new Quaternion(0, 0, multiply * (Math.sin(feta_z / 2)), (Math.cos(feta_z / 2)));
-        return q.mul(q1);
+        var rotation = new Quaternion(r_sin.x(), r_sin.y(), r_sin.z(), Math.cos(feta/2));
+        return defaultQuaternion.mul(rotation);
     }
 }