diff --git a/libraries/io/ddr/tb/vhdl/tb_io_ddr.vhd b/libraries/io/ddr/tb/vhdl/tb_io_ddr.vhd
index 99ca70f314661414c2819d92253333783c5b8a9e..9d535094535a654fc7f45afb7c1a3e03a3b39730 100644
--- a/libraries/io/ddr/tb/vhdl/tb_io_ddr.vhd
+++ b/libraries/io/ddr/tb/vhdl/tb_io_ddr.vhd
@@ -62,7 +62,7 @@ ARCHITECTURE str of tb_io_ddr IS
                                                     TO_UVEC(                                         3, c_tech_ddr_max.a_row_w),
                                                     TO_UVEC(2**c_tech_ddr_4g.a_col_w-1, c_tech_ddr_max.a_col_w));
                                                     
-  CONSTANT c_ctlr_data_w      : NATURAL := func_tech_ddr_ctrl_data_w(c_tech_ddr);
+  CONSTANT c_ctlr_data_w      : NATURAL := func_tech_ddr_ctlr_data_w(c_tech_ddr);
   CONSTANT c_dp_data_w        : NATURAL := 32;
   CONSTANT c_dp_factor        : NATURAL := c_ctlr_data_w/c_dp_data_w;