diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 35e5670..37e849c 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -4747,6 +4747,8 @@
 					{only with the +quickfix feature}
 			quickfix	1 if quickfix or location list window
 					{only with the +quickfix feature}
+			terminal	1 if a terminal window
+					{only with the +terminal feature}
 			tabnr		tab page number
 			variables	a reference to the dictionary with
 					window-local variables