diff --git a/rotorpy/utils/plotter.py b/rotorpy/utils/plotter.py
index 2ffe0b8..d78000a 100644
--- a/rotorpy/utils/plotter.py
+++ b/rotorpy/utils/plotter.py
@@ -157,7 +157,7 @@ class Plotter():
             ax.set_ylabel("angular velocity, rad/s")
             ax.grid()
             ax.legend(('x','y','z'))
-            ax.set_xlabel("Time, s")
+            ax.set_xlabel("time, s")
 
         if plot_estimator:
             if self.estimator_exists:
@@ -244,4 +244,4 @@ class Plotter():
             sd = []
             self.estimator_exists = False
 
-        return (time, x, x_des, v, v_des, q, q_des, w, s, s_des, M, T, wind, accel, gyro, accel_gt, x_mc, v_mc, q_mc, w_mc, filter_state, covariance, sd)
\ No newline at end of file
+        return (time, x, x_des, v, v_des, q, q_des, w, s, s_des, M, T, wind, accel, gyro, accel_gt, x_mc, v_mc, q_mc, w_mc, filter_state, covariance, sd)