diff --git a/src/vim9script.c b/src/vim9script.c
index fbb815c..7078cbe 100644
--- a/src/vim9script.c
+++ b/src/vim9script.c
@@ -979,6 +979,7 @@
     "true",
     "false",
     "null",
+    "this",
     NULL
 };