diff --git a/boot.php b/boot.php
index 0ece5c39c..215f25ad2 100755
--- a/boot.php
+++ b/boot.php
@@ -47,7 +47,7 @@ define ( 'PLATFORM_NAME',           'hubzilla' );
 define ( 'STD_VERSION',             '1.9' );
 define ( 'ZOT_REVISION',            '1.1' );
 
-define ( 'DB_UPDATE_VERSION',       1178  );
+define ( 'DB_UPDATE_VERSION',       1179  );
 
 
 /**
diff --git a/install/schema_mysql.sql b/install/schema_mysql.sql
index 13fc54aba..d2a5ac85e 100644
--- a/install/schema_mysql.sql
+++ b/install/schema_mysql.sql
@@ -1,7 +1,7 @@
 
 CREATE TABLE IF NOT EXISTS `abconfig` (
   `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
-  `chan` char(255) NOT NULL DEFAULT '',
+  `chan` int(10) unsigned NOT NULL DEFAULT '',
   `xchan` char(255) NOT NULL DEFAULT '',
   `cat` char(255) NOT NULL DEFAULT '',
   `k` char(255) NOT NULL DEFAULT '',
diff --git a/install/schema_postgres.sql b/install/schema_postgres.sql
index 9473252e6..64cf37f7e 100644
--- a/install/schema_postgres.sql
+++ b/install/schema_postgres.sql
@@ -1,6 +1,6 @@
 CREATE TABLE "abconfig" (
   "id" serial  NOT NULL,
-  "chan" text NOT NULL,
+  "chan" bigint NOT NULL,
   "xchan" text NOT NULL,
   "cat" text NOT NULL,
   "k" text NOT NULL,
diff --git a/install/update.php b/install/update.php
index 241de78e1..3cb5010eb 100644
--- a/install/update.php
+++ b/install/update.php
@@ -1,6 +1,6 @@
 <?php
 
-define( 'UPDATE_VERSION' , 1178 );
+define( 'UPDATE_VERSION' , 1179 );
 
 /**
  *
@@ -2325,3 +2325,39 @@ function update_r1177() {
         return UPDATE_SUCCESS;
     return UPDATE_FAILED;
 }
+
+
+function update_r1178() {
+
+	$c2 = null;
+
+	$c1 = q("SELECT channel_id, channel_hash from channel where true");
+	if($c1) {
+		$c2 = q("SELECT id, chan from abconfig where true");
+		if($c2) {
+			for($x = 0; $x < count($c2); $x ++) {
+				foreach($c1 as $c) {
+					if($c['channel_hash'] == $c2[$x]['chan']) {
+						$c2[$x]['chan'] = $c['channel_id'];
+						break;
+					}
+				}
+			}
+		}
+	}
+
+	$r1 = q("ALTER TABLE abconfig CHANGE chan chan int(10) unsigned NOT NULL DEFAULT '0' ");
+
+	if($c2) {
+		foreach($c2 as $c) {
+			q("UPDATE abconfig SET chan = %d where id = %d",
+				intval($c['chan']),
+				intval($c['id'])
+			);
+		}
+	}
+
+	if($r1)
+		return UPDATE_SUCCESS;
+	return UPDATE_FAILED;
+}
\ No newline at end of file