diff --git a/example_demo/qmtech_wukong/Makefile b/example_demo/qmtech_wukong/Makefile
index 5bee141..62a379c 100644
--- a/example_demo/qmtech_wukong/Makefile
+++ b/example_demo/qmtech_wukong/Makefile
@@ -4,6 +4,7 @@ PART = xc7a100tfgg676-2
 CHIPDB  = ${ARTIX7_CHIPDB}
 ADDITIONAL_SOURCES = ../../rtl/ddr3_controller.v  ../../rtl/ddr3_phy.v  ../../rtl/ddr3_top.v  uart_rx.v  uart_tx.v clk_wiz.v 
 
+
 #############################################################################################
 NEXTPNR_XILINX_DIR ?= /snap/openxc7/current/opt/nextpnr-xilinx
 NEXTPNR_XILINX_PYTHON_DIR ?= ${NEXTPNR_XILINX_DIR}/python
@@ -67,4 +68,4 @@ clean:
 	
 .PHONY: pnrclean
 pnrclean:
-	rm *.fasm *.frames *.bit 
\ No newline at end of file
+	rm *.fasm *.frames *.bit