diff --git a/lib/awful/widget/graph.lua.in b/lib/awful/widget/graph.lua.in
index 17e0a9ca..286219d7 100644
--- a/lib/awful/widget/graph.lua.in
+++ b/lib/awful/widget/graph.lua.in
@@ -31,6 +31,7 @@ local data = setmetatable({}, { __mode = "k" })
 -- @function set_color
 -- @param graph The graph.
 -- @param color The graph color.
+-- @see gears.color.create_pattern
 
 --- Set the graph background color.
 --