diff --git a/src/ChangeLog b/src/ChangeLog
index faf9564a835..b6f962f4523 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2011-04-26  Chong Yidong  <cyd@stupidchicken.com>
+
+	* nsfns.m (Fns_read_file_name): Doc fix (Bug#8534).
+
 2011-04-18  Eli Zaretskii  <eliz@gnu.org>
 
 	* s/ms-w32.h (localtime): Redirect to sys_localtime.
diff --git a/src/nsfns.m b/src/nsfns.m
index 10ce80dd480..64d3bbfbcd0 100644
--- a/src/nsfns.m
+++ b/src/nsfns.m
@@ -1422,10 +1422,11 @@ Turn the input menu (an NSMenu) into a lisp list for tracking on lisp side
 DEFUN ("ns-read-file-name", Fns_read_file_name, Sns_read_file_name, 1, 4, 0,
        doc: /* Use a graphical panel to read a file name, using prompt PROMPT.
 Optional arg DIR, if non-nil, supplies a default directory.
-Optional arg ISLOAD, if non-nil, means read a file name for saving.
+Optional arg MUSTMATCH, if non-nil, means the returned file or
+directory must exist.
 Optional arg INIT, if non-nil, provides a default file name to use.  */)
-     (prompt, dir, isLoad, init)
-     Lisp_Object prompt, dir, isLoad, init;
+     (prompt, dir, mustmatch, init)
+     Lisp_Object prompt, dir, mustmatch, init;
 {
   static id fileDelegate = nil;
   int ret;
@@ -1450,7 +1451,7 @@ Turn the input menu (an NSMenu) into a lisp list for tracking on lisp side
   if ([dirS characterAtIndex: 0] == '~')
     dirS = [dirS stringByExpandingTildeInPath];
 
-  panel = NILP (isLoad) ?
+  panel = NILP (mustmatch) ?
     (id)[EmacsSavePanel savePanel] : (id)[EmacsOpenPanel openPanel];
 
   [panel setTitle: promptS];
@@ -1464,7 +1465,7 @@ Turn the input menu (an NSMenu) into a lisp list for tracking on lisp side
 
   panelOK = 0;
   BLOCK_INPUT;
-  if (NILP (isLoad))
+  if (NILP (mustmatch))
     {
       ret = [panel runModalForDirectory: dirS file: initS];
     }