diff --git a/src/mio.py b/src/mio.py
index abf56811fdf08d724ac7f6d45c6605fd83894651..b8be77f2f5170b944b71ae7ffc338eb0e3cd665f 100755
--- a/src/mio.py
+++ b/src/mio.py
@@ -325,9 +325,9 @@ if __name__ == '__main__':
                                           s.value[0]))
                 pass
             for f in tree._file_:
-                print('%s[f] %s = %s' % ('  '*(indent+1),
-                                         f.name[0],
-                                         f.source[0] or f.name[0]))
+                src = os.path.normpath('%s/%s' % (f._parent._parent.files[0],
+                                                  f.source[0] or f.name[0]))
+                print('%s[f] %s = %s' % ('  '*(indent+1), f.name[0], src))
                 pass
             for d in tree._dependency_:
                 dump_tree(d.name[0], indent+1)