diff --git a/libraries/dsp/filter/tb/vhdl/tb_fil_ppf_wide.vhd b/libraries/dsp/filter/tb/vhdl/tb_fil_ppf_wide.vhd
index f962f7fd5096c54256b9baa5f60d2f1031658f83..d53544dea105acd28f9af17f6d91dc9d4d524c36 100644
--- a/libraries/dsp/filter/tb/vhdl/tb_fil_ppf_wide.vhd
+++ b/libraries/dsp/filter/tb/vhdl/tb_fil_ppf_wide.vhd
@@ -99,7 +99,7 @@ entity tb_fil_ppf_wide is
       --   coef_dat_w     : natural; -- = 16, data width of the FIR coefficients
       -- end record;
     g_file_index_arr    : t_nat_natural_arr := array_init(0, 128, 1); 
-    g_coefs_file_prefix : string            := "../../data/coefs_wide"      
+    g_coefs_file_prefix : string            := "hex/coefs_wide"      
   );
 end entity tb_fil_ppf_wide;