diff --git a/2.9.1/overviews/architecture-of-scala-collections.md b/2.9.1/overviews/architecture-of-scala-collections.md
index 547232b821..b09df3b286 100644
--- a/2.9.1/overviews/architecture-of-scala-collections.md
+++ b/2.9.1/overviews/architecture-of-scala-collections.md
@@ -758,7 +758,7 @@ storing the three strings "abc", "abd", "al", "all", "xy" would look
 like this:
 
 A sample patricia tree:
-<img src="http://www.scala-lang.org/docu/files/collections-api/patricia.png" width="550">
+<img src="{{ site.baseurl }}/resources/images/patricia.png" width="550">
 
 To find the node corresponding to the string "abc" in this trie,
 simply follow the subtree labeled "a", proceed from there to the
diff --git a/resources/images/patricia.png b/resources/images/patricia.png
new file mode 100644
index 0000000000..a8f364614c
Binary files /dev/null and b/resources/images/patricia.png differ