diff --git a/debian/alternc.config b/debian/alternc.config
index 00be1268..a0495796 100644
--- a/debian/alternc.config
+++ b/debian/alternc.config
@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /bin/bash -x
 
 set -e
 
@@ -16,7 +16,7 @@ if [ "$RET" = "false" ]; then
         # reset the welcomeconfirm flag if user refuses so it gets asked again next time
         db_reset alternc/welcomeconfirm || true
         db_fset alternc/welcomeconfirm "seen" "false" || true
-	exit 1
+	exit 3
 fi
 
 # default values for local.sh
@@ -140,7 +140,7 @@ check_mysql(){
                 db_go
                 db_get alternc/remote_mysql_error || true
                 if [ "$RET" = "false" ]; then
-                    exit 1
+                    exit 4
                 fi
             fi    
         done
@@ -193,7 +193,7 @@ if [ -z "$ACL" ]; then
 	db_title AlternC
         db_reset alternc/acluninstalled || true
         db_fset alternc/acluninstalled "seen" "false" || true
-        exit 1
+        exit 2
 fi           
 quota_activation=$(quotaon -pa 2>/dev/null |grep '^group.*on$' | /usr/bin/awk '$4 ~ /^\'$MOUNT_POINT'$/ {print $4}') 
 
diff --git a/debian/alternc.postinst b/debian/alternc.postinst
index 060d7243..913b9484 100644
--- a/debian/alternc.postinst
+++ b/debian/alternc.postinst
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash -x
 
 set -e
 
diff --git a/debian/alternc.postrm b/debian/alternc.postrm
index d1a766dd..3a16d7dc 100644
--- a/debian/alternc.postrm
+++ b/debian/alternc.postrm
@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /bin/bash -x
 
 set -e
 
diff --git a/debian/alternc.preinst b/debian/alternc.preinst
index d75fef2b..9b69b66c 100644
--- a/debian/alternc.preinst
+++ b/debian/alternc.preinst
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash -x
 
 set -e
 
diff --git a/debian/alternc.prerm b/debian/alternc.prerm
index 0e424e67..c55bd453 100644
--- a/debian/alternc.prerm
+++ b/debian/alternc.prerm
@@ -1,4 +1,4 @@
-#!/bin/sh -e
+#!/bin/bash -e -x
 
 # Debian alternc prerm
 # Benjamin Sonntag <benjamin@alternc.org>
diff --git a/debian/control b/debian/control
index 89f84c50..09be5890 100644
--- a/debian/control
+++ b/debian/control
@@ -9,8 +9,8 @@ Standards-Version: 3.9.1
 
 Package: alternc
 Architecture: all
-Pre-depends: debconf (>= 0.5.00) | debconf-2.0
-Depends: debianutils (>= 1.13.1), apache2-mpm-itk, libapache2-mod-php5, php5-mysql, phpmyadmin, postfix, proftpd-mod-mysql, proftpd-basic, bind9, wget, rsync, ca-certificates, locales, perl-suid | perl, postfix-mysql, wwwconfig-common, sasl2-bin, libsasl2-modules, php5-cli, lockfile-progs (>= 0.1.9), gettext (>= 0.10.40-5), sudo, adduser, mysql-client, dnsutils, bash (>= 4), acl, dovecot-imapd (>= 1:1.2.15), dovecot-pop3d (>= 1:1.2.15), vlogger, mailx
+Pre-depends: debconf (>= 0.5.00) | debconf-2.0, bash (>= 4)
+Depends: debianutils (>= 1.13.1), apache2-mpm-itk, libapache2-mod-php5, php5-mysql, phpmyadmin, postfix, proftpd-mod-mysql, proftpd-basic, bind9, wget, rsync, ca-certificates, locales, perl-suid | perl, postfix-mysql, wwwconfig-common, sasl2-bin, libsasl2-modules, php5-cli, lockfile-progs (>= 0.1.9), gettext (>= 0.10.40-5), sudo, adduser, mysql-client, dnsutils, acl, dovecot-imapd (>= 1:1.2.15), dovecot-pop3d (>= 1:1.2.15), vlogger, mailx
 Recommends: mysql-server(>= 5.0), ntp, quota
 Conflicts: alternc-admintools, alternc-awstats (< 1.0), alternc-webalizer (<= 0.9.4), alternc-mailman (< 2.0)
 Provides: alternc-admintools