diff --git a/libraries/io/ddr/hdllib.cfg b/libraries/io/ddr/hdllib.cfg
index 5b51b20d216010698dcee18c95755980e565cf01..d2d1e23ffbd9ff9ecb22bfb302c8813a75ed6163 100644
--- a/libraries/io/ddr/hdllib.cfg
+++ b/libraries/io/ddr/hdllib.cfg
@@ -18,6 +18,9 @@ test_bench_files =
     tb/vhdl/tb_tb_io_ddr.vhd
 
 
+regression_test_vhdl = 
+    tb/vhdl/tb_tb_io_ddr.vhd
+
 [modelsim_project_file]
 modelsim_compile_ip_files =
     $RADIOHDL/libraries/technology/ip_stratixiv/ddr3_uphy_4g_800_master/copy_hex_files.tcl