diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index f0a7e9e..b1f3e15 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -2085,7 +2085,7 @@
 		|i_CTRL-X_CTRL-D|
 	]	tag completion
 	t	same as "]"
-	f{func}	call the function {func}.  Multiple "f" flags may be specified.
+	F{func}	call the function {func}.  Multiple "F" flags may be specified.
 		Refer to |complete-functions| for details on how the function
 		is invoked and what it should return.  The value can be the
 		name of a function or a |Funcref|.  For |Funcref| values,
@@ -2103,9 +2103,9 @@
 		If generating matches is potentially slow, |complete_check()|
 		should be used to avoid blocking and preserve editor
 		responsiveness.
-	f	equivalent to using "f{func}", where the function is taken from
+	F	equivalent to using "F{func}", where the function is taken from
 		the 'completefunc' option.
-	o	equivalent to using "f{func}", where the function is taken from
+	o	equivalent to using "F{func}", where the function is taken from
 		the 'omnifunc' option.
 
 	Unloaded buffers are not loaded, thus their autocmds |:autocmd| are
diff --git a/runtime/doc/version9.txt b/runtime/doc/version9.txt
index 662cb17..5cffb63 100644
--- a/runtime/doc/version9.txt
+++ b/runtime/doc/version9.txt
@@ -41624,8 +41624,8 @@
 - New option value for 'wildmode':
 	"noselect"	- do not auto select an entry in the wildmenu
 - New flags for 'complete':
-	"f{func}"	- complete using given function
-	"f"		- complete using 'completefunc'
+	"F{func}"	- complete using given function
+	"F"		- complete using 'completefunc'
 	"o"		- complete using 'omnifunc'
 - allow to limit matches for the 'complete' sources by using the
   "{flag}^<limit>" notation