1 files changed, 6 insertions, 0 deletions

diff --git a/lispref/objects.texi b/lispref/objects.texi
index 93848cffe09..5665e5beee6 100644
--- a/lispref/objects.texi
+++ b/lispref/objects.texi
@@ -1779,6 +1779,12 @@ with references to further information.
 
 @item windowp
 @xref{Basic Windows, windowp}.
+
+@item booleanp
+@xref{nil and t, booleanp}.
+
+@item string-or-null-p
+@xref{Predicates for Strings, string-or-null-p}.
 @end table
 
   The most general way to check the type of an object is to call the