diff --git a/vcf_cleaner.py b/vcf_cleaner.py
index a6d83ae..72f6b42 100644
--- a/vcf_cleaner.py
+++ b/vcf_cleaner.py
@@ -4,6 +4,7 @@ import sys
 import quopri
 import base64
 import pickle
+import itertools
 import phonenumbers
 import pythonvCard4
 from pythonvCard4.vcard import Contact
@@ -80,9 +81,19 @@ for line in input_file:
             for value in contact.custom[field]:
                 contact.custom[field] = quopri.decodestring(value).decode()
 
+        # notes reencoding
         if contact.note:
             contact.note = quopri.decodestring(contact.note).decode()
 
+        # deduplicate and reencode address
+        if contact.adr != []:
+            adresses = []
+            for adresse in contact.adr:
+                adresses.append([quopri.decodestring(x).decode() for x in adresse["value"]])
+            clean = list(k for k,_ in itertools.groupby(adresses))
+            clean = [{"value":x, "type":["HOME"]} for x in clean]
+            contact.adr = clean
+
         # rewrite contact as vcard
         vcf_text = contact.to_vcard()
         output.write(vcf_text)