diff --git a/libraries/dsp/verify_pfb/tb_verify_pfb_wg.vhd b/libraries/dsp/verify_pfb/tb_verify_pfb_wg.vhd
index 85e9724b6bf862de675c64c66c245a9d04bb8b9c..326e370deb90d18245a4682d0a035fd68f92314b 100644
--- a/libraries/dsp/verify_pfb/tb_verify_pfb_wg.vhd
+++ b/libraries/dsp/verify_pfb/tb_verify_pfb_wg.vhd
@@ -156,7 +156,7 @@ ENTITY tb_verify_pfb_wg IS
     -- FFT
     g_fft_out_dat_w         : NATURAL := 18;   -- = W_subband, number of output bits
     g_fft_out_gain_w        : NATURAL := 1;    -- = 1, output gain factor applied after the last stage output, before requantization to out_dat_w
-    g_fft_stage_dat_w       : NATURAL := 27;   -- = c_dsp_mult_w = 18, number of bits that are used inter-stage
+    g_fft_stage_dat_w       : NATURAL := 24;   -- = c_dsp_mult_w = 18, number of bits that are used inter-stage
     g_fft_guard_w           : NATURAL := 1;    -- = 2
     g_switch_en             : STD_LOGIC := '0'  -- two real input decorrelation option in PFB2
   );