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--- a/src/mediaserver/cdplugins/uprcl/uprclinit.py
+++ b/src/mediaserver/cdplugins/uprcl/uprclinit.py
@@ -44,6 +44,8 @@
     g_rclconfdir = ""
     g_friendlyname = "UpMpd-mediaserver"
     g_trees = {}
+    # order in python3 maps is unstable
+    g_trees_order = ['folders', 'untagged', 'tags']
     
 # Create or update Recoll index, then read and process the data.  This
 # runs in the separate uprcl_init_worker thread, and signals