diff --git a/libraries/io/ddr/hdllib.cfg b/libraries/io/ddr/hdllib.cfg
index 2a0dde8785bfbc149fd7889f214337640985150b..21e5e2d872b813290ae90b955c1c8b3279d375b6 100644
--- a/libraries/io/ddr/hdllib.cfg
+++ b/libraries/io/ddr/hdllib.cfg
@@ -13,7 +13,9 @@ synth_files =
     src/vhdl/io_ddr_driver_flush_ctrl.vhd
     src/vhdl/io_ddr_driver.vhd
     src/vhdl/io_ddr_cross_domain.vhd
+    src/vhdl/io_ddr_reg.vhd
     src/vhdl/io_ddr.vhd
+    src/vhdl/mms_io_ddr.vhd
 
 test_bench_files = 
     tb/vhdl/tb_io_ddr.vhd