diff --git a/sim/sm3_pad_mntr.sv b/sim/script/sm3_pad_mntr.sv
similarity index 100%
rename from sim/sm3_pad_mntr.sv
rename to sim/script/sm3_pad_mntr.sv
diff --git a/sim/script/run_sm3_expnd_tb.do b/sim/sim_rtl/run_sm3_expnd_tb.do
similarity index 100%
rename from sim/script/run_sm3_expnd_tb.do
rename to sim/sim_rtl/run_sm3_expnd_tb.do
diff --git a/sim/tb_sm3_expnd_top.sv b/sim/tb/tb_sm3_expnd_top.sv
similarity index 100%
rename from sim/tb_sm3_expnd_top.sv
rename to sim/tb/tb_sm3_expnd_top.sv
diff --git a/sim/tb_sm3_pad_top.sv b/sim/tb/tb_sm3_pad_top.sv
similarity index 100%
rename from sim/tb_sm3_pad_top.sv
rename to sim/tb/tb_sm3_pad_top.sv