diff --git a/alr_envs/classic_control/hole_reacher.py b/alr_envs/classic_control/hole_reacher.py
index d3faf13..681183b 100644
--- a/alr_envs/classic_control/hole_reacher.py
+++ b/alr_envs/classic_control/hole_reacher.py
@@ -94,23 +94,15 @@ class HoleReacher(gym.Env):
 
         # compute reward directly in step function
 
-        dist_reward = 0
+        reward = 0
         if not self._is_collided:
             if self._steps == 199:
-                dist_reward = np.linalg.norm(self.end_effector - self.bottom_center_of_hole)
+                reward = - np.linalg.norm(self.end_effector - self.bottom_center_of_hole) ** 2
         else:
-            dist_reward = np.linalg.norm(self.end_effector - self.bottom_center_of_hole)
-
-        reward = - dist_reward ** 2
-
-        reward -= 5e-8 * np.sum(acc**2)
-
-        # if self._steps == 180:
-        #     reward -= 0.1 * np.sum(vel**2) ** 2
-
-        if self._is_collided:
             reward = -self.collision_penalty
 
+        reward -= 5e-8 * np.sum(acc ** 2)
+
         info = {"is_collided": self._is_collided}
 
         self._steps += 1
diff --git a/dmp_pd_control_example.py b/dmp_pd_control_example.py
index 303f979..5abf8fa 100644
--- a/dmp_pd_control_example.py
+++ b/dmp_pd_control_example.py
@@ -8,7 +8,7 @@ if __name__ == "__main__":
     dim = 15
     n_cpus = 4
 
-    n_samples = 1
+    n_samples = 10
 
     vec_env = DmpAsyncVectorEnv([make_simple_env(i) for i in range(n_cpus)],
                                 n_samples=n_samples)