diff --git a/Flow/demo/jtag.s b/Flow/demo/jtag.s
index 50b49f1..a92aaf3 100644
--- a/Flow/demo/jtag.s
+++ b/Flow/demo/jtag.s
@@ -63,6 +63,7 @@ loop2:
    bnez x5, loop2
 
 loop3:
+   addi x4, x4, 1
    beq x0, x0, loop3
 
 // Write 0xff to STDOUT for TB to terminate test.
diff --git a/Flow/soc/Makefile b/Flow/soc/Makefile
deleted file mode 100644
index e69de29..0000000