diff --git a/UsingCustomFonts.md b/UsingCustomFonts.md
index d5072b9..4fa9906 100644
--- a/UsingCustomFonts.md
+++ b/UsingCustomFonts.md
@@ -79,4 +79,4 @@ We are planning to add registration support within XML in [#168](https://github.
 ## Further references
 
  * Nice Summary at: http://weait.com/content/add-fonts-your-openstreetmap-server
- * `load_fonts()` recursive C++ function in http://trac.openstreetmap.org/browser/applications/utils/mod_tile/gen_tile.cpp#L111
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+ * `load_fonts()` recursive C++ function in https://github.com/openstreetmap/mod_tile/blob/master/src/gen_tile.cpp#L138-L170
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