diff --git a/lisp/minibuffer.el b/lisp/minibuffer.el
index 69a10ce4e2d..8a7da41a3b1 100644
--- a/lisp/minibuffer.el
+++ b/lisp/minibuffer.el
@@ -3160,8 +3160,9 @@ Fourth arg MUSTMATCH can take the following values:
   input, but she needs to confirm her choice if she called
   `minibuffer-complete' right before `minibuffer-complete-and-exit'
   and the input is not an existing file.
-- a function, which will be called with the input as the argument.
-  If it returns a non-nil value, the minibuffer is exited with that value.
+- a function, which will be called with the input as the
+  argument.  If the function returns a non-nil value, the
+  minibuffer is exited with that argument as the value.
 - anything else behaves like t except that typing RET does not exit if it
   does non-null completion.
 
diff --git a/src/minibuf.c b/src/minibuf.c
index 85d6ec44349..c2e270a450d 100644
--- a/src/minibuf.c
+++ b/src/minibuf.c
@@ -2011,8 +2011,9 @@ REQUIRE-MATCH can take the following values:
   input, but she needs to confirm her choice if she called
   `minibuffer-complete' right before `minibuffer-complete-and-exit'
   and the input is not an element of COLLECTION.
-- a function, which will be called with the input as the parameter.
-  If it returns a non-nil value, the minibuffer is exited with that value.
+- a function, which will be called with the input as the
+  argument.  If the function returns a non-nil value, the
+  minibuffer is exited with that argument as the value.
 - anything else behaves like t except that typing RET does not exit if it
   does non-null completion.