diff --git a/src/Layer/PaintingArea.h b/src/Layer/PaintingArea.h
index 9126000..91f8d20 100644
--- a/src/Layer/PaintingArea.h
+++ b/src/Layer/PaintingArea.h
@@ -285,7 +285,14 @@ IntelliToolsettings Toolsettings;
  */
 IntelliColorPicker colorPicker;
 
+/*!
+ * \brief historyadd adds an hisotry step
+ */
 void historyadd();
+
+/*!
+ * \brief historyGoBack go back in hisotry
+ */
 void historyGoBack();
 
 /*!