diff --git a/lib/SDRAM/ddr_sdr_v1_5/sim/tb_ctrl_sdr_wb32_de0nano.fdo b/lib/SDRAM/ddr_sdr_v1_5/sim/tb_ctrl_sdr_wb32_de0nano.fdo
index c85cb53..e49cd8b 100644
--- a/lib/SDRAM/ddr_sdr_v1_5/sim/tb_ctrl_sdr_wb32_de0nano.fdo
+++ b/lib/SDRAM/ddr_sdr_v1_5/sim/tb_ctrl_sdr_wb32_de0nano.fdo
@@ -32,4 +32,4 @@ do {tb_ctrl_sdr_wb32_de0nano.wdo}
 view wave
 view structure
 view signals
-run 220us
+run 440us