diff --git a/PowerEditor/installer/APIs/javascript.xml b/PowerEditor/installer/APIs/javascript.xml
index d8e75e8ca..2b90b8734 100644
--- a/PowerEditor/installer/APIs/javascript.xml
+++ b/PowerEditor/installer/APIs/javascript.xml
@@ -258,6 +258,7 @@
 		<KeyWord name="hasAttributeNS" />
 		<KeyWord name="hasAttributes" />
 		<KeyWord name="hasFocus" />
+		<KeyWord name="hasOwnProperty" />
 		<KeyWord name="hash" />
 		<KeyWord name="height" />
 		<KeyWord name="Hidden" />