diff --git a/src/ini.cpp b/src/ini.cpp
--- a/src/ini.cpp
+++ b/src/ini.cpp
@@ -25,6 +25,10 @@
 # include "core/mem_func.hpp"
 #endif
 
+/**
+ * Create a new ini file with given group names.
+ * @param list_group_names A \c NULL terminated list with group names that should be loaded as lists instead of variables. @see IGT_LIST
+ */
 IniFile::IniFile(const char * const *list_group_names) : IniLoadFile(list_group_names)
 {
 }