diff --git a/warcprox/warcproxy.py b/warcprox/warcproxy.py
index 625138b..9d23244 100644
--- a/warcprox/warcproxy.py
+++ b/warcprox/warcproxy.py
@@ -380,6 +380,11 @@ class RecordedUrl:
                 warcprox_meta['dedup-buckets'] = {}
                 warcprox_meta['dedup-buckets'][warcprox_meta['captures-bucket']] = 'rw'
                 del warcprox_meta['captures-bucket']
+            if 'dedup-bucket' in warcprox_meta:
+                # more backwards compatibility
+                warcprox_meta['dedup-buckets'] = {}
+                warcprox_meta['dedup-buckets'][warcprox_meta['dedup-bucket']] = 'rw'
+                del warcprox_meta['dedup-bucket']
             self.warcprox_meta = warcprox_meta
         else:
             self.warcprox_meta = {}