diff --git a/rm_shooter_controllers/src/standard.cpp b/rm_shooter_controllers/src/standard.cpp
index c2e0d541..07089712 100644
--- a/rm_shooter_controllers/src/standard.cpp
+++ b/rm_shooter_controllers/src/standard.cpp
@@ -297,8 +297,15 @@ void Controller::setSpeed(const rm_msgs::ShootCmd& cmd)
     {
       for (size_t j = 0; j < ctrls_friction_[i].size(); j++)
       {
-        ctrls_friction_[i][j]->setCommand(wheel_speed_directions_[i][j] *
-                                          (cmd_.wheel_speed + config_.extra_wheel_speed + wheel_speed_offsets_[i][j]));
+        // Used to distinguish the front and rear friction wheels.
+        if (j == 0)
+          ctrls_friction_[i][j]->setCommand(
+              wheel_speed_directions_[i][j] *
+              (cmd_.wheel_speed + config_.extra_wheel_speed + cmd_.wheels_speed_offset_back));
+        if (j == 1)
+          ctrls_friction_[i][j]->setCommand(
+              wheel_speed_directions_[i][j] *
+              (cmd_.wheel_speed + config_.extra_wheel_speed + cmd_.wheels_speed_offset_front));
       }
     }
   }