diff --git a/doc/sample.dat b/doc/sample.dat
index c810e0bd..907f19ab 100644
--- a/doc/sample.dat
+++ b/doc/sample.dat
@@ -1,3 +1,5 @@
+N $
+
 = account =~ /^Expenses:Books/
   (Liabilities:Taxes)             -0.10