diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index b80b117b3f..9e4d14d390 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1674,7 +1674,9 @@ A jump table for the options with a short description can be found at |Q_op|.
 
 	   noselect Same as "noinsert", except that no menu item is
 		    pre-selected.  If both "noinsert" and "noselect" are
-		    present, "noselect" has precedence.
+		    present, "noselect" takes precedence.  This options is
+		    enabled automatically when 'autocomplete' is on, unless
+		    "preinsert" is also enabled.
 
 	   nosort   Disable sorting of completion candidates based on fuzzy
 		    scores when "fuzzy" is enabled.  Candidates will appear
diff --git a/runtime/lua/vim/_meta/options.lua b/runtime/lua/vim/_meta/options.lua
index 20f7f1b7cb..b82b6693e2 100644
--- a/runtime/lua/vim/_meta/options.lua
+++ b/runtime/lua/vim/_meta/options.lua
@@ -1219,7 +1219,9 @@ vim.go.cia = vim.go.completeitemalign
 ---
 ---    noselect Same as "noinsert", except that no menu item is
 --- 	    pre-selected.  If both "noinsert" and "noselect" are
---- 	    present, "noselect" has precedence.
+--- 	    present, "noselect" takes precedence.  This options is
+--- 	    enabled automatically when 'autocomplete' is on, unless
+--- 	    "preinsert" is also enabled.
 ---
 ---    nosort   Disable sorting of completion candidates based on fuzzy
 --- 	    scores when "fuzzy" is enabled.  Candidates will appear
diff --git a/src/nvim/options.lua b/src/nvim/options.lua
index a396ef912a..cba887ff41 100644
--- a/src/nvim/options.lua
+++ b/src/nvim/options.lua
@@ -1699,7 +1699,9 @@ local options = {
 
            noselect Same as "noinsert", except that no menu item is
         	    pre-selected.  If both "noinsert" and "noselect" are
-        	    present, "noselect" has precedence.
+        	    present, "noselect" takes precedence.  This options is
+        	    enabled automatically when 'autocomplete' is on, unless
+        	    "preinsert" is also enabled.
 
            nosort   Disable sorting of completion candidates based on fuzzy
         	    scores when "fuzzy" is enabled.  Candidates will appear