diff --git a/nodes/control_node.py b/nodes/control_node.py
index a3c9867..41ea9aa 100755
--- a/nodes/control_node.py
+++ b/nodes/control_node.py
@@ -58,7 +58,7 @@ def calc_target_index(self, state, cx, cy, cyaw):
         dx_vec = fx - np.asarray(cx).reshape([-1, 1])
         dy_vec = fy - np.asarray(cy).reshape([-1, 1])
         dist = np.hstack([dx_vec, dy_vec])
-        dist_2 = np.sum(dist ** 2, axis=1)
+        dist_2 = np.sum(dist**2, axis=1)
         target_idx = np.argmin(dist_2)
 
         # Project RMS error onto front axle vector
diff --git a/nodes/planning_node.py b/nodes/planning_node.py
index 9d944d5..fa7ace3 100755
--- a/nodes/planning_node.py
+++ b/nodes/planning_node.py
@@ -103,7 +103,7 @@ def create_trajectory(
     Z = np.array([lane_coeff.W, lane_coeff.Y_offset, lane_coeff.dPhi, lane_coeff.c0])
 
     for i, u in enumerate(x):
-        u2 = u ** 2
+        u2 = u**2
         y[i] = np.dot(np.array([0, -1, -u, 0.5 * u2]), Z)
 
     tran_mat = tf_listener.asMatrix("map", lane_coeff.header)