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 d420b71..f5cf8b7 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
@@ -4,8 +4,11 @@
 vlib work
 vcom -explicit  -93 "../../../FIFO/src/fifo_ctrl_pkg.vhd"
 vcom -explicit  -93 "../../../misc/dpram_1w1r_dist.vhd"
-vcom -explicit  -93 "../../../FIFO/src/fifo_sync.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"
 vcom -explicit  -93 "../../../FIFO/src/fifo_sync_ctrl.vhd"
+vcom -explicit  -93 "../../../FIFO/src/fifo_sync.vhd"
 vcom -explicit  -93 "../../../misc/utils_pkg.vhd"
 vcom -explicit  -93 "../../../misc/clockgen_virtex4.vhd"
 vcom -explicit  -93 "../src/sdram_config.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 be11690..f55357b 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
@@ -4,8 +4,11 @@
 vlib work
 vcom -explicit  -93 "../../../FIFO/src/fifo_ctrl_pkg.vhd"
 vcom -explicit  -93 "../../../misc/dpram_1w1r_dist.vhd"
-vcom -explicit  -93 "../../../FIFO/src/fifo_sync.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"
 vcom -explicit  -93 "../../../FIFO/src/fifo_sync_ctrl.vhd"
+vcom -explicit  -93 "../../../FIFO/src/fifo_sync.vhd"
 vcom -explicit  -93 "../../../misc/utils_pkg.vhd"
 vcom -explicit  -93 "../../../misc/clockgen_virtex4.vhd"
 vcom -explicit  -93 "../src/sdram_config.vhd"