diff --git a/appends/meta-qt5/qtbase_%.bbappend b/appends/meta-qt5/qtbase_%.bbappend
index d90b807..373dd28 100644
--- a/appends/meta-qt5/qtbase_%.bbappend
+++ b/appends/meta-qt5/qtbase_%.bbappend
@@ -26,5 +26,6 @@ do_copytocrosssysroot_append() {
         "$cross_sysroot_qtconf"
 
     # ---------- mkspecs ----------
+    # qmake.conf replace -fdebug-prefix-map ( see bitbake.conf )
 
 }