diff --git a/openfpga_flow/openfpga_arch/k4_frac_N8_reset_softadder_register_scan_chain_dsp8_caravel_io_skywater130nm_fdhd_cc_openfpga.xml b/openfpga_flow/openfpga_arch/k4_frac_N8_reset_softadder_register_scan_chain_dsp8_caravel_io_skywater130nm_fdhd_cc_openfpga.xml
index ebef951da..1114d0071 100644
--- a/openfpga_flow/openfpga_arch/k4_frac_N8_reset_softadder_register_scan_chain_dsp8_caravel_io_skywater130nm_fdhd_cc_openfpga.xml
+++ b/openfpga_flow/openfpga_arch/k4_frac_N8_reset_softadder_register_scan_chain_dsp8_caravel_io_skywater130nm_fdhd_cc_openfpga.xml
@@ -262,7 +262,6 @@
     <!-- Binding operating pb_type to physical pb_type -->
     <!-- Binding operating pb_types in mode 'arithmetic' -->
     <pb_type name="clb.fle[arithmetic].soft_adder.adder_lut4" physical_pb_type_name="clb.fle[physical].fabric.frac_logic.frac_lut4" mode_bits="1"/>
-    <pb_type name="clb.fle[arithmetic].soft_adder.ff" physical_pb_type_name="clb.fle[physical].fabric.ff"/>
     <pb_type name="clb.fle[arithmetic].soft_adder.carry_follower" physical_pb_type_name="clb.fle[physical].fabric.frac_logic.carry_follower"/>
     <!-- Binding operating pb_types in mode 'n2_lut3' -->
     <pb_type name="clb.fle[n2_lut3].lut3inter.ble3.lut3" physical_pb_type_name="clb.fle[physical].fabric.frac_logic.frac_lut4" mode_bits="1" physical_pb_type_index_factor="0.5">