diff --git a/dba/davical.sql b/dba/davical.sql
index fa8280cc..a58b9d91 100644
--- a/dba/davical.sql
+++ b/dba/davical.sql
@@ -369,6 +369,7 @@ CREATE TABLE addressbook_resource (
 
 CREATE TABLE addressbook_address_adr (
   dav_id INT8 NOT NULL REFERENCES caldav_data(dav_id) ON UPDATE CASCADE ON DELETE CASCADE,
+  count INT,
   type TEXT,
   box_no TEXT,
   unit_no TEXT,
@@ -377,21 +378,26 @@ CREATE TABLE addressbook_address_adr (
   region TEXT,
   postcode TEXT,
   country TEXT,
-  property TEXT -- The full text of the property
+  property TEXT, -- The full text of the property
+  UNIQUE (dav_id, count)
 );
 
 CREATE TABLE addressbook_address_tel (
   dav_id INT8 NOT NULL REFERENCES caldav_data(dav_id) ON UPDATE CASCADE ON DELETE CASCADE,
+  count INT,
   type TEXT,
   tel TEXT,
-  property TEXT -- The full text of the property
+  property TEXT, -- The full text of the property
+  UNIQUE (dav_id, count)
 );
 
 CREATE TABLE addressbook_address_email (
   dav_id INT8 NOT NULL REFERENCES caldav_data(dav_id) ON UPDATE CASCADE ON DELETE CASCADE,
+  count INT,
   type TEXT,
   email TEXT,
-  property TEXT -- The full text of the property
+  property TEXT, -- The full text of the property
+  UNIQUE (dav_id, count)
 );
 
 
@@ -489,4 +495,4 @@ CREATE SEQUENCE metrics_count_delticket;
 CREATE SEQUENCE metrics_count_bind;
 CREATE SEQUENCE metrics_count_unknown;
 
-SELECT new_db_revision(1,3,3, 'Marzec' );
+SELECT new_db_revision(1,3,4, 'Kwiecień' );
diff --git a/dba/patches/1.3.4.sql b/dba/patches/1.3.4.sql
new file mode 100644
index 00000000..aa8a32a1
--- /dev/null
+++ b/dba/patches/1.3.4.sql
@@ -0,0 +1,51 @@
+
+-- Notable enhancement:	add unique constraints to tables missing them
+
+BEGIN;
+SELECT check_db_revision(1,3,3);
+
+-- Temporary sequence so we can set the count in each of the tables.
+--
+-- While this doesn't give the result we really want, where count increments
+-- for each dav_id, it'll give us the uniqueness we want. Then as users
+-- update their records, we'll eventually up with counts per dav_id.
+CREATE SEQUENCE temporary_seq;
+
+-- addressbook_address_adr
+ALTER TABLE addressbook_address_adr
+  ADD COLUMN count INT;
+
+UPDATE addressbook_address_adr
+  SET count = nextval('temporary_seq');
+
+CREATE UNIQUE INDEX addressbook_address_adr_pk
+  ON addressbook_address_adr(dav_id, count);
+
+-- addressbook_address_email
+ALTER TABLE addressbook_address_email
+  ADD COLUMN count INT;
+
+CREATE UNIQUE INDEX addressbook_address_email_pk
+  ON addressbook_address_email(dav_id, count);
+
+UPDATE addressbook_address_email
+  SET count = nextval('temporary_seq');
+
+-- addressbook_address_tel
+ALTER TABLE addressbook_address_tel
+  ADD COLUMN count INT;
+
+UPDATE addressbook_address_tel
+  SET count = nextval('temporary_seq');
+
+CREATE UNIQUE INDEX addressbook_address_tel_pk
+  ON addressbook_address_tel(dav_id, count);
+
+-- Tidy up after ourselves.
+DROP SEQUENCE temporary_seq;
+
+-- http://blogs.transparent.com/polish/names-of-the-months-and-their-meaning/
+SELECT new_db_revision(1,3,4, 'Kwiecień' );
+
+COMMIT;
+ROLLBACK;
diff --git a/inc/vcard.php b/inc/vcard.php
index 7fc890dc..c5a6260b 100644
--- a/inc/vcard.php
+++ b/inc/vcard.php
@@ -66,18 +66,7 @@ VALUES( :dav_id, :version, :uid, :nickname, :fn, :name, :note, :org, :url, :fbur
 
 
   /**
-CREATE TABLE addressbook_address_adr (
-  dav_id INT8 NOT NULL REFERENCES caldav_data(dav_id) ON UPDATE CASCADE ON DELETE CASCADE,
-  type TEXT,
-  box_no TEXT,
-  unit_no TEXT,
-  street_address TEXT,
-  locality TEXT,
-  region TEXT,
-  postcode TEXT,
-  country TEXT,
-  property TEXT -- The full text of the property
-);
+   * Break out addresses.
   */
   function WriteAddresses( $dav_id ) {
     $addresses = $this->GetProperties('ADR');
@@ -89,9 +78,12 @@ CREATE TABLE addressbook_address_adr (
 
     $params = array( ':dav_id' => $dav_id );
     $qry->QDo('DELETE FROM addressbook_address_adr WHERE dav_id = :dav_id', $params );
+
+    $count = 0;
     foreach( $addresses AS $adr ) {
       $type = $adr->GetParameterValue('TYPE');
       if ( is_array($type) ) $type = implode('~|~',$type);
+
       $params[':type'] = $type;
       //explode on ; that is not preceeded by an \
       $address = preg_split( '{(?<!\\\\);}', $adr->Value());
@@ -105,21 +97,18 @@ CREATE TABLE addressbook_address_adr (
       @$params[':region']   = $address[4];
       @$params[':postcode'] = $address[5];
       @$params[':country']  = $address[6];
-      $params[':property'] = $adr->Render();
-      $qry->QDo( 'INSERT INTO addressbook_address_adr (dav_id, type, box_no, unit_no, street_address, locality, region, postcode, country, property)
-VALUES( :dav_id, :type, :box_no, :unit_no, :street_address, :locality, :region, :postcode, :country, :property)', $params );
+      $params[':property']  = $adr->Render();
+      $params[':count']     = $count++;
+
+      $qry->QDo( 'INSERT INTO addressbook_address_adr (dav_id, count, type, box_no, unit_no, street_address, locality, region, postcode, country, property)
+VALUES ( :dav_id, :count, :type, :box_no, :unit_no, :street_address, :locality, :region, :postcode, :country, :property)', $params );
     }
     if ( ! $in_transaction ) $qry->Commit();
   }
 
 
   /**
-CREATE TABLE addressbook_address_tel (
-  dav_id INT8 NOT NULL REFERENCES caldav_data(dav_id) ON UPDATE CASCADE ON DELETE CASCADE,
-  type TEXT,
-  tel TEXT,
-  property TEXT -- The full text of the property
-);
+   * Break out phones.
   */
   function WritePhones( $dav_id ) {
     $telephones = $this->GetProperties('TEL');
@@ -131,14 +120,20 @@ CREATE TABLE addressbook_address_tel (
 
     $params = array( ':dav_id' => $dav_id );
     $qry->QDo('DELETE FROM addressbook_address_tel WHERE dav_id = :dav_id', $params );
+
+    $count = 0;
     foreach( $telephones AS $tel ) {
       $type = $tel->GetParameterValue('TYPE');
       if ( is_array($type) ) $type = implode('~|~',$type);
+
       $params[':type'] = $type;
       if ( ! isset($params[':type']) ) $params[':type'] = 'voice';
-      $params[':tel'] = $tel->Value();
+
+      $params[':tel']      = $tel->Value();
       $params[':property'] = $tel->Render();
-      $qry->QDo( 'INSERT INTO addressbook_address_tel (dav_id, type, tel, property) VALUES( :dav_id, :type, :tel, :property)', $params );
+      $params[':count']    = $count++;
+
+      $qry->QDo( 'INSERT INTO addressbook_address_tel (dav_id, count, type, tel, property) VALUES ( :dav_id, :count, :type, :tel, :property)', $params );
     }
     if ( ! $in_transaction ) $qry->Commit();
   }
@@ -162,15 +157,20 @@ CREATE TABLE addressbook_address_email (
 
     $params = array( ':dav_id' => $dav_id );
     $qry->QDo('DELETE FROM addressbook_address_email WHERE dav_id = :dav_id', $params );
+
+    $count = 0;
     foreach( $emails AS $email ) {
       $type = $email->GetParameterValue('TYPE');
       if ( is_array($type) ) $type = implode('~|~',$type);
-      $params[':type'] = $type;
-      $params[':email'] = $email->Value();
+
+      $params[':type']     = $type;
+      $params[':email']    = $email->Value();
       $params[':property'] = $email->Render();
-      $qry->QDo( 'INSERT INTO addressbook_address_email (dav_id, type, email, property) VALUES( :dav_id, :type, :email, :property)', $params );
+      $params[':count']    = $count++;
+
+      $qry->QDo( 'INSERT INTO addressbook_address_email (dav_id, count, type, email, property) VALUES ( :dav_id, :count, :type, :email, :property)', $params );
     }
     if ( ! $in_transaction ) $qry->Commit();
   }
 
-}
\ No newline at end of file
+}
diff --git a/testing/tests/binding/Really-Upgrade-Database.result b/testing/tests/binding/Really-Upgrade-Database.result
index 299acd5c..9bdec045 100644
--- a/testing/tests/binding/Really-Upgrade-Database.result
+++ b/testing/tests/binding/Really-Upgrade-Database.result
@@ -1,4 +1,4 @@
-The database is version XX currently at revision 1.3.3.
+The database is version XX currently at revision 1.3.4.
 No patches were applied.
 Supported locales updated.
 Updated view: dav_principal.sql applied.
diff --git a/testing/tests/carddav/Really-Upgrade-Database.result b/testing/tests/carddav/Really-Upgrade-Database.result
index 299acd5c..9bdec045 100644
--- a/testing/tests/carddav/Really-Upgrade-Database.result
+++ b/testing/tests/carddav/Really-Upgrade-Database.result
@@ -1,4 +1,4 @@
-The database is version XX currently at revision 1.3.3.
+The database is version XX currently at revision 1.3.4.
 No patches were applied.
 Supported locales updated.
 Updated view: dav_principal.sql applied.
diff --git a/testing/tests/regression-suite/Really-Upgrade-Database.result b/testing/tests/regression-suite/Really-Upgrade-Database.result
index 299acd5c..9bdec045 100644
--- a/testing/tests/regression-suite/Really-Upgrade-Database.result
+++ b/testing/tests/regression-suite/Really-Upgrade-Database.result
@@ -1,4 +1,4 @@
-The database is version XX currently at revision 1.3.3.
+The database is version XX currently at revision 1.3.4.
 No patches were applied.
 Supported locales updated.
 Updated view: dav_principal.sql applied.
diff --git a/testing/tests/scheduling/Really-Upgrade-Database.result b/testing/tests/scheduling/Really-Upgrade-Database.result
index 299acd5c..9bdec045 100644
--- a/testing/tests/scheduling/Really-Upgrade-Database.result
+++ b/testing/tests/scheduling/Really-Upgrade-Database.result
@@ -1,4 +1,4 @@
-The database is version XX currently at revision 1.3.3.
+The database is version XX currently at revision 1.3.4.
 No patches were applied.
 Supported locales updated.
 Updated view: dav_principal.sql applied.