diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index e16423b3..4ece9703 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -474,7 +474,7 @@ void generate_simulated_telem() {
         Serial.println("\n\nSwitching eclipse mode! \n\n");
       }
 
-      double Xi = eclipse * amps_max[0] * (float) sin(2.0 * 3.14 * time_stamp / (46.0 * rotatation_speed)) + rnd_float(-2, 2);
+      double Xi = eclipse * amps_max[0] * (float) sin(2.0 * 3.14 * time_stamp / (46.0 * rotation_speed)) + rnd_float(-2, 2);
       double Yi = eclipse * amps_max[1] * (float) sin((2.0 * 3.14 * time_stamp / (46.0 * rotation_speed)) + (3.14 / 2.0)) + rnd_float(-2, 2);
       double Zi = eclipse * amps_max[2] * (float) sin((2.0 * 3.14 * time_stamp / (46.0 * rotation_speed)) + 3.14 + angle[2]) + rnd_float(-2, 2);