diff --git a/KiCad.gitignore b/KiCad.gitignore
index 208bc4f..6b522fa 100644
--- a/KiCad.gitignore
+++ b/KiCad.gitignore
@@ -1,21 +1,22 @@
 # For PCBs designed using KiCad: http://www.kicad-pcb.org/
+# Format documentation: http://kicad-pcb.org/help/file-formats/
 
 # Temporary files
 *.000
 *.bak
 *.bck
 *.kicad_pcb-bak
 *~
 _autosave-*
 *.tmp
 
 # Netlist files (exported from Eeschema)
 *.net
 
 # Autorouter files (exported from Pcbnew)
 *.dsn
 *.ses
 
 # Exported BOM files
 *.xml
 *.csv