diff --git a/indra/llui/llnotifications.cpp b/indra/llui/llnotifications.cpp
index 5ca2cc1cc4..929f93dd85 100644
--- a/indra/llui/llnotifications.cpp
+++ b/indra/llui/llnotifications.cpp
@@ -81,6 +81,7 @@ LLNotificationForm::FormButton::FormButton()
 
 LLNotificationForm::FormInput::FormInput()
 :	type("type"),
+	max_length_chars("max_length_chars"),
 	width("width", 0)
 {}
 
diff --git a/indra/llui/llnotifications.h b/indra/llui/llnotifications.h
index f84d9e3921..e52875665e 100644
--- a/indra/llui/llnotifications.h
+++ b/indra/llui/llnotifications.h
@@ -194,6 +194,7 @@ public:
 	{
 		Mandatory<std::string>	type;
 		Optional<S32>			width;
+		Optional<S32>			max_length_chars;
 
 		FormInput();
 	};