diff --git a/README.org b/README.org
index 8b76fda..41248d0 100644
--- a/README.org
+++ b/README.org
@@ -19,7 +19,7 @@ Get the file, add to load path, and
 ** Variable
 - =eldoc-box-max-pixel-width= & =eldoc-box-max-pixel-height= :: Set them according to the screen resolution of your machine.
 - =eldoc-box-only-multi-line= :: Set this to non-nil and eldoc-box only display multi-line message in childframe. One line messages are left in minibuffer.
-- =eldoc-box-cleanup-interval= :: After this amount of seconds will eldoc-box attempt to cleanup the childframe. E.g. if it is set to 1, the childframe is cleared 1 second after you moved the point to somewhere else (that doesn't have a doc to show).
+- =eldoc-box-cleanup-interval= :: After this amount of seconds will eldoc-box attempt to cleanup the childframe. E.g. if it is set to 1, the childframe is cleared 1 second after you moved the point to somewhere else (that doesn't have a doc to show). This doesn't apply to =eldoc-box-hover-at-point-mode=, in that mode the childframe is cleared as soon as point moves.
 
 ** Use with eglot
 As of writing this README, eglot doesn't have a public mode hook, use this hook:
diff --git a/eldoc-box.el b/eldoc-box.el
index ab7135f..d66a61a 100644
--- a/eldoc-box.el
+++ b/eldoc-box.el
@@ -57,7 +57,9 @@
 (defvar eldoc-box-cleanup-interval 1
   "After this amount of seconds will eldoc-box attempt to cleanup the childframe.
 E.g. if it is set to 1, the childframe is cleared 1 second after
-you moved the point to somewhere else (that doesn't have a doc to show)")
+you moved the point to somewhere else (that doesn't have a doc to show).
+This doesn't apply to =eldoc-box-hover-at-point-mode=,
+in that mode the childframe is cleared as soon as point moves.")
 
 (defvar eldoc-box-clear-with-C-g nil
   "If set to non-nil, eldoc-box clears cildframe when you hit \C-g.")