diff --git a/docs/api/reference.rst b/docs/api/reference.rst
index a8c0d74a..2a58589e 100644
--- a/docs/api/reference.rst
+++ b/docs/api/reference.rst
@@ -43,6 +43,12 @@ Functions
 
 .. doxygenfunction:: loot::GetLiblootRevision
 
+.. doxygenfunction:: loot::SelectMessageContent
+
+.. doxygenfunction:: loot::ToSimpleMessage
+
+.. doxygenfunction:: loot::ToSimpleMessages
+
 Interfaces
 ==========