diff --git a/runtime/doc/vimfn.txt b/runtime/doc/vimfn.txt
index 722ffe8a8c..7eccc6011d 100644
--- a/runtime/doc/vimfn.txt
+++ b/runtime/doc/vimfn.txt
@@ -6291,7 +6291,7 @@ map({expr1}, {expr2})                                                    *map()*
 		Note that {expr2} is the result of an expression and is then
 		used as an expression again.  Often it is good to use a
 		|literal-string| to avoid having to double backslashes.  You
-		still have to double ' quotes
+		still have to double single (') quotes, though.
 
 		If {expr2} is a |Funcref| it is called with two arguments:
 			1. The key or the index of the current item.
diff --git a/runtime/lua/vim/_meta/vimfn.gen.lua b/runtime/lua/vim/_meta/vimfn.gen.lua
index 252425d2fe..3d9b12bbda 100644
--- a/runtime/lua/vim/_meta/vimfn.gen.lua
+++ b/runtime/lua/vim/_meta/vimfn.gen.lua
@@ -5602,7 +5602,7 @@ function vim.fn.log10(expr) end
 --- Note that {expr2} is the result of an expression and is then
 --- used as an expression again.  Often it is good to use a
 --- |literal-string| to avoid having to double backslashes.  You
---- still have to double ' quotes
+--- still have to double single (') quotes, though.
 ---
 --- If {expr2} is a |Funcref| it is called with two arguments:
 ---   1. The key or the index of the current item.
diff --git a/src/nvim/eval.lua b/src/nvim/eval.lua
index f966f48da4..7323fef2a6 100644
--- a/src/nvim/eval.lua
+++ b/src/nvim/eval.lua
@@ -6829,7 +6829,7 @@ M.funcs = {
       Note that {expr2} is the result of an expression and is then
       used as an expression again.  Often it is good to use a
       |literal-string| to avoid having to double backslashes.  You
-      still have to double ' quotes
+      still have to double single (') quotes, though.
 
       If {expr2} is a |Funcref| it is called with two arguments:
       	1. The key or the index of the current item.