diff --git a/lib/awful/widget/progressbar.lua.in b/lib/awful/widget/progressbar.lua.in
index 56e2733e..c4e6a940 100644
--- a/lib/awful/widget/progressbar.lua.in
+++ b/lib/awful/widget/progressbar.lua.in
@@ -170,7 +170,7 @@ local function update(pbar)
     pbar.widget.image = img
 end
 
--- Set the progressbar value.
+--- Set the progressbar value.
 -- @param pbar The progress bar.
 -- @param value The progress bar value between 0 and 1.
 function set_value(pbar, value)