diff --git a/lib/SDRAM/ddr_sdr_v1_5/sim/tb_sdram_ctrl_frontend64_wb.fdo b/lib/SDRAM/ddr_sdr_v1_5/sim/tb_sdram_ctrl_frontend64_wb.fdo
index d25b108..e6ac6b1 100644
--- a/lib/SDRAM/ddr_sdr_v1_5/sim/tb_sdram_ctrl_frontend64_wb.fdo
+++ b/lib/SDRAM/ddr_sdr_v1_5/sim/tb_sdram_ctrl_frontend64_wb.fdo
@@ -1,9 +1,10 @@
 ## NOTE:  Do not edit this file.
 ##
+if {[file exists work]} {vdel -lib work -all}
 
 vlib work
 vcom -explicit  -93 "../../../FIFO/src/fifo_ctrl_pkg.vhd"
-vcom -explicit  -93 "../../../rams/dpram_1w1r2c_ro_sim.vhd"
+vcom -explicit  -93 "../../../rams/dpram_1w1r2c_ra_sim.vhd"
 vcom -explicit  -93 "../../../FIFO/src/gray_counter.vhd"
 vcom -explicit  -93 "../../../FIFO/src/fifo_async_ctrl.vhd"
 vcom -explicit  -93 "../../../FIFO/src/fifo_async.vhd"
diff --git a/lib/SDRAM/ddr_sdr_v1_5/sim/tb_sdram_ctrl_frontend_wb.fdo b/lib/SDRAM/ddr_sdr_v1_5/sim/tb_sdram_ctrl_frontend_wb.fdo
index 4b8b1e3..731f7db 100644
--- a/lib/SDRAM/ddr_sdr_v1_5/sim/tb_sdram_ctrl_frontend_wb.fdo
+++ b/lib/SDRAM/ddr_sdr_v1_5/sim/tb_sdram_ctrl_frontend_wb.fdo
@@ -1,9 +1,10 @@
 ## NOTE:  Do not edit this file.
 ##
+if {[file exists work]} {vdel -lib work -all}
 
 vlib work
 vcom -explicit  -93 "../../../FIFO/src/fifo_ctrl_pkg.vhd"
-vcom -explicit  -93 "../../../rams/dpram_1w1r2c_ro_sim.vhd"
+vcom -explicit  -93 "../../../rams/dpram_1w1r2c_ra_sim.vhd"
 vcom -explicit  -93 "../../../FIFO/src/gray_counter.vhd"
 vcom -explicit  -93 "../../../FIFO/src/fifo_async_ctrl.vhd"
 vcom -explicit  -93 "../../../FIFO/src/fifo_async.vhd"