diff --git a/docs/rsc/layout.xml b/docs/rsc/layout.xml
index 9ec514ba..a3cadb4f 100644
--- a/docs/rsc/layout.xml
+++ b/docs/rsc/layout.xml
@@ -18,7 +18,7 @@
       <tab type="files" visible="yes" title="" intro=""/>
       <tab type="globals" visible="yes" title="" intro=""/>
     </tab>
-    <tab type="dirs" visible="yes" title="" intro=""/>
+    <!--<tab type="dirs" visible="yes" title="" intro=""/>-->
     <tab type="examples" visible="yes" title="" intro=""/>  
   </navindex>
 
diff --git a/src/gdisp.c b/src/gdisp.c
index 2d4e7f3e..80c2469c 100644
--- a/src/gdisp.c
+++ b/src/gdisp.c
@@ -693,6 +693,7 @@ void gdispFillRoundedBox(coord_t x, coord_t y, coord_t cx, coord_t cy, coord_t r
 #if (GDISP_NEED_SCROLL && GDISP_NEED_MULTITHREAD) || defined(__DOXYGEN__)
 	/**
 	 * @brief   Scroll vertically a section of the screen.
+	 * @pre		GDISP_NEED_SCROLL must be set to TRUE in halconf.h
 	 * @note    Optional.
 	 * @note    If lines is >= cy, it is equivelent to a area fill with bgcolor.
 	 *