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--- a/src/mediaserver/cdplugins/uprcl/uprclsearch.py
+++ b/src/mediaserver/cdplugins/uprcl/uprclsearch.py
@@ -223,8 +223,10 @@
             break
     uplog("Search retrieved %d docs" % (len(entries),))
 
-    return sorted(entries, cmp=cmpentries)
-
+    if PY3:
+        return sorted(entries, key=cmpentries)
+    else:
+        return sorted(entries, cmp=cmpentries)
 
 
 if __name__ == '__main__':