1 files changed, 4 insertions, 2 deletions

diff --git a/src/termhooks.h b/src/termhooks.h
index 7762dd15efe..b16c36f9551 100644
--- a/src/termhooks.h
+++ b/src/termhooks.h
@@ -228,9 +228,11 @@ struct input_event
   /* For an ASCII_KEYSTROKE_EVENT and MULTIBYTE_CHAR_KEYSTROKE_EVENT,
      this is the character.
      For a NON_ASCII_KEYSTROKE_EVENT, this is the keysym code.
-     For a mouse event, this is the button number.  */
+     For a mouse event, this is the button number.
+     For a HELP_EVENT, this is the position within the object
+      (stored in ARG below) where the help was found.  */
   /* In WindowsNT, for a mouse wheel event, this is the delta.  */
-  int code;
+  EMACS_INT code;
   enum scroll_bar_part part;
 
   int modifiers;                /* See enum below for interpretation.  */