diff --git a/s2e-ff/src/components/aocs/laser_emitter.hpp b/s2e-ff/src/components/aocs/laser_emitter.hpp
index 2e219094..7280a587 100644
--- a/s2e-ff/src/components/aocs/laser_emitter.hpp
+++ b/s2e-ff/src/components/aocs/laser_emitter.hpp
@@ -72,8 +72,6 @@ class LaserEmitter : public Component, public GaussianBeamBase {
 
   libra::Vector<3> laser_position_i_m_{0.0};
   libra::Vector<3> laser_emitting_direction_i_{0.0};
-  libra::Vector<3> previous_laser_position_i_m_{0.0};
-  libra::Vector<3> previous_laser_emitting_direction_i_{0.0};
 
   int count_ = 0;