diff --git a/debian/control b/debian/control
index df65de07..9421a4d8 100644
--- a/debian/control
+++ b/debian/control
@@ -16,6 +16,7 @@ Build-Depends:
  libdbi-perl,
  libhash-merge-perl,
  libio-interface-perl,
+ libio-prompter-perl,
  libipc-system-simple-perl,
  libnet-netmask-perl,
  libreadonly-perl,
diff --git a/debian/ngcp-ngcpcfg.install b/debian/ngcp-ngcpcfg.install
index 61f13f92..7bde6fde 100644
--- a/debian/ngcp-ngcpcfg.install
+++ b/debian/ngcp-ngcpcfg.install
@@ -26,8 +26,8 @@ scripts/clean               usr/share/ngcp-ngcpcfg/scripts/
 scripts/commit              usr/share/ngcp-ngcpcfg/scripts/
 scripts/del                 usr/share/ngcp-ngcpcfg/scripts/
 scripts/diff                usr/share/ngcp-ngcpcfg/scripts/
-scripts/get                 usr/share/ngcp-ngcpcfg/scripts/
 scripts/etckeeper           usr/share/ngcp-ngcpcfg/scripts/
+scripts/get                 usr/share/ngcp-ngcpcfg/scripts/
 scripts/initialise          usr/share/ngcp-ngcpcfg/scripts/
 scripts/log                 usr/share/ngcp-ngcpcfg/scripts/
 scripts/patch               usr/share/ngcp-ngcpcfg/scripts/
diff --git a/sbin/ngcp-sync-constants b/sbin/ngcp-sync-constants
index 160caed1..3db587c8 100755
--- a/sbin/ngcp-sync-constants
+++ b/sbin/ngcp-sync-constants
@@ -11,6 +11,7 @@ use YAML::XS;
 use Getopt::Long;
 use IPC::System::Simple qw(system capturex);
 use Readonly;
+use IO::Prompter;
 #----------------------------------------------------------------------
 Readonly my $CONSTANTS_YML => "/etc/ngcp-config/constants.yml";
 Readonly my $SIPWISE_EXTRA_CNF => "/etc/mysql/sipwise_extra.cnf";
@@ -98,9 +99,21 @@ sub connect_db {
       $dsn .= ";mysql_read_default_file=$SIPWISE_EXTRA_CNF";
     }
 
-    $dbh = DBI->connect($dsn, $dbuser, $dbpass, { PrintError => 1 })
-        or die "Can't connect to MySQL database 'mysql' using $dbauthmsg: ". $DBI::errstr;
-    log_debug("connected to $dbhost:$dbport using $dbauthmsg");
+    if ( $dbh = DBI->connect($dsn, $dbuser, $dbpass, { PrintError => 1 }) ) {
+      log_debug("connected to $dbhost:$dbport using $dbauthmsg");
+    } else {
+      printf "Can't connect to MySQL database 'mysql' using $dbauthmsg.\n". $DBI::errstr;
+      if ($mysql_root) {
+        printf "\nPlease provide valid password for MariaDB user '$dbuser': ";
+        $dbpass = prompt('', -echo=>'*', -v, -hNONE);
+
+        $dbh = DBI->connect($dsn, $dbuser, $dbpass, { PrintError => 1 })
+          or die "Can't connect to MySQL database 'mysql' using $dbauthmsg with provided password.\n". $DBI::errstr;
+        log_debug("connected to $dbhost:$dbport using $dbauthmsg with provided password.");
+      } else {
+        exit 1;
+      }
+    }
 
     $dbh->do("SET sql_log_bin=0")
         or die "Cannot set sql_log_bin=0: ".$DBI::errstr;