diff --git a/runtime/doc/vimfn.txt b/runtime/doc/vimfn.txt
index 26668fbb6e..19e3e4948b 100644
--- a/runtime/doc/vimfn.txt
+++ b/runtime/doc/vimfn.txt
@@ -8277,7 +8277,7 @@ readdir({directory} [, {expr}])                                      *readdir()*
 		Each time {expr} is evaluated |v:val| is set to the entry name.
 		When {expr} is a function the name is passed as the argument.
 		For example, to get a list of files ending in ".txt": >vim
-		  echo readdir(dirname, {n -> n =~ '.txt$'})
+		  echo readdir(dirname, {n -> n =~ '\.txt$'})
 <		To skip hidden and backup files: >vim
 		  echo readdir(dirname, {n -> n !~ '^\.\|\~$'})
 
diff --git a/runtime/lua/vim/_meta/vimfn.gen.lua b/runtime/lua/vim/_meta/vimfn.gen.lua
index b42f17f9c7..8109219a3e 100644
--- a/runtime/lua/vim/_meta/vimfn.gen.lua
+++ b/runtime/lua/vim/_meta/vimfn.gen.lua
@@ -7425,7 +7425,7 @@ function vim.fn.readblob(fname, offset, size) end
 --- Each time {expr} is evaluated |v:val| is set to the entry name.
 --- When {expr} is a function the name is passed as the argument.
 --- For example, to get a list of files ending in ".txt": >vim
----   echo readdir(dirname, {n -> n =~ '.txt$'})
+---   echo readdir(dirname, {n -> n =~ '\.txt$'})
 --- <To skip hidden and backup files: >vim
 ---   echo readdir(dirname, {n -> n !~ '^\.\|\~$'})
 ---
diff --git a/src/nvim/eval.lua b/src/nvim/eval.lua
index f8d92119f5..04801e8a2d 100644
--- a/src/nvim/eval.lua
+++ b/src/nvim/eval.lua
@@ -8920,7 +8920,7 @@ M.funcs = {
       Each time {expr} is evaluated |v:val| is set to the entry name.
       When {expr} is a function the name is passed as the argument.
       For example, to get a list of files ending in ".txt": >vim
-        echo readdir(dirname, {n -> n =~ '.txt$'})
+        echo readdir(dirname, {n -> n =~ '\.txt$'})
       <To skip hidden and backup files: >vim
         echo readdir(dirname, {n -> n !~ '^\.\|\~$'})