diff --git a/free-programming-books.md b/free-programming-books.md
index 313c8401a..0450354f0 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -13,7 +13,7 @@
 * [ColdFusion](#coldfusion)
 * [D / DTrace](#d--dtrace)
 * [DB2](#db2)
-* [Delphi / Pascal](#delphi-pascal)
+* [Delphi / Pascal](#delphi--pascal)
 * [Django](#django)
 * [Emacs](#emacs)
 * [Erlang](#erlang)