diff --git a/rtl/ip/fft/Multiply.v b/rtl/ip/fft/Multiply.v
index 3e52eff..930b83c 100644
--- a/rtl/ip/fft/Multiply.v
+++ b/rtl/ip/fft/Multiply.v
@@ -2,7 +2,7 @@
 //  Multiply: Complex Multiplier
 //----------------------------------------------------------------------
 
-module Multiply #(
+(* use_dsp = "no" *) module Multiply #(
     parameter   WIDTH = 16
 )(
     input   signed  [WIDTH-1:0] a_re,
diff --git a/rtl/ip/mlkem/top/fft_mlkem_axi_slave.v b/rtl/ip/mlkem/top/fft_mlkem_axi_slave.v
index ada8d7f..bc21602 100644
--- a/rtl/ip/mlkem/top/fft_mlkem_axi_slave.v
+++ b/rtl/ip/mlkem/top/fft_mlkem_axi_slave.v
@@ -6,7 +6,7 @@
 //   FFT:    0x8000..0xcfff
 // Route the low ML-KEM block to ML-KEM and the remaining accelerator window to
 // FFT.
-module fft_mlkem_axi_slave (
+(* use_dsp = "no" *) module fft_mlkem_axi_slave (
     input             clk,
     input             resetn,