diff --git a/src/camera.cpp b/src/camera.cpp
index 97acaa8..6cc2e8a 100644
--- a/src/camera.cpp
+++ b/src/camera.cpp
@@ -1031,7 +1031,7 @@ static void motor_update(bool zebra_block, bool tl_block)
     prev_zstate = g_zstate;
     prev_tlstate = g_tl_state;
 
-    double spd = (boost_factor() > 1.0) ? 26.0 : target_speed;
+    double spd = target_speed * boost_factor();
 
     // 斑马线起步后 3.3~5s 降速走稳
     if (g_zstate == Z_COOLDOWN) {