diff --git a/doc/gtkdoc/CPP-sections.txt b/doc/gtkdoc/CPP-sections.txt
index 5e31791..71616fc 100644
--- a/doc/gtkdoc/CPP-sections.txt
+++ b/doc/gtkdoc/CPP-sections.txt
@@ -14,6 +14,7 @@ cpp_define_remove
 cpp_delete
 cpp_get_filename
 cpp_new
+cpp_new_string
 cpp_path_add
 cpp_scan
 </SECTION>