diff --git a/build/fs/b_readme b/build/fs/b_readme
index 5c5099c..0e6139c 100644
--- a/build/fs/b_readme
+++ b/build/fs/b_readme
@@ -1,10 +1,11 @@
 Here is how to compile and run hello.b:
 
   @ bc hello.b hello.s
-  @ as ops.s bl.s hello.s bi.s
+  @ ln dmr op.s
+  @ as op.s bl.s hello.s bi.s
   I
   II
-  ops.s   
+  op.s
   bl.s    
   hello.s 
   bi.s