diff --git a/KiCad.gitignore b/KiCad.gitignore
index 208bc4fc..6b522fa8 100644
--- a/KiCad.gitignore
+++ b/KiCad.gitignore
@@ -1,4 +1,5 @@
 # For PCBs designed using KiCad: http://www.kicad-pcb.org/
+# Format documentation: http://kicad-pcb.org/help/file-formats/
 
 # Temporary files
 *.000