diff --git a/doc/classes/Expression.xml b/doc/classes/Expression.xml
index fd5a9218362..2451ab1a0dc 100644
--- a/doc/classes/Expression.xml
+++ b/doc/classes/Expression.xml
@@ -65,7 +65,7 @@
 		<method name="get_error_text" qualifiers="const">
 			<return type="String" />
 			<description>
-				Returns the error text if [method parse] has failed.
+				Returns the error text if [method parse] or [method execute] has failed.
 			</description>
 		</method>
 		<method name="has_execute_failed" qualifiers="const">