diff --git a/library/xilinx/axi_dacfifo/axi_dacfifo_constr.xdc b/library/xilinx/axi_dacfifo/axi_dacfifo_constr.xdc
index 8942ef3d9..d3ea6a0a4 100644
--- a/library/xilinx/axi_dacfifo/axi_dacfifo_constr.xdc
+++ b/library/xilinx/axi_dacfifo/axi_dacfifo_constr.xdc
@@ -1,8 +1,10 @@
 
-set_property shreg_extract no [get_cells -hier -filter {name =~ *xfer_req_m*}]
-set_property shreg_extract no [get_cells -hier -filter {name =~ *xfer_last_m*}]
+set_property ASYNC_REG TRUE \
+  [get_cells -hier *_xfer_req_m[0]*] \
+  [get_cells -hier *_xfer_last_m[0]*]
 
-set_false_path -to [get_cells axi_xfer_*_m* -hierarchical -filter {PRIMITIVE_SUBGROUP == flop}]
+set_false_path -to [get_cells *_xfer_req_m[0]* -hierarchical -filter {PRIMITIVE_SUBGROUP == flop}]
+set_false_path -to [get_cells *_xfer_last_m[0]* -hierarchical -filter {PRIMITIVE_SUBGROUP == flop}]
 set_false_path -to [get_cells *dma_rst_m1* -hierarchical -filter {PRIMITIVE_SUBGROUP == flop}]
 
 set_false_path -from [get_cells *dma_* -hierarchical -filter {PRIMITIVE_SUBGROUP == flop}] \