diff --git a/install_postfixadmin.sh b/install_postfixadmin.sh
index e317a46..c5aa6bf 100755
--- a/install_postfixadmin.sh
+++ b/install_postfixadmin.sh
@@ -539,7 +539,7 @@ else
    echononl "\tBackup Postfix Database '$POSTFIX_DB_NAME'"
    if [[ "$POSTFIX_DB_TYPE" = "mysql" ]]; then 
       echo -n " (MySQL).."
-      mysqldump $MYSQL_CREDENTIALS --opt $POSTFIX_DB_NAME >> ${WEBSITE_BASEDIR}/${POSTFIX_DB_NAME}.${backup_date}.sql 2> $log_file
+      mysqldump $MYSQL_CREDENTIALS --opt $POSTFIX_DB_NAME > ${WEBSITE_BASEDIR}/${POSTFIX_DB_NAME}.${backup_date}.sql 2> $log_file
       if [[ $? -eq 0 ]]; then
          echo_ok
       else
@@ -548,7 +548,7 @@ else
       fi
    elif [[ "$POSTFIX_DB_TYPE" = "pgsql" ]]; then
       echo -n " (PostgreSQL).."
-      su - postgres -c "pg_dump $POSTFIX_DB_NAME" >> ${WEBSITE_BASEDIR}/${POSTFIX_DB_NAME}.${backup_date}.sql 2> $log_file
+      su - postgres -c "pg_dump -c $POSTFIX_DB_NAME" >> ${WEBSITE_BASEDIR}/${POSTFIX_DB_NAME}.${backup_date}.sql 2> $log_file
       if [[ $? -eq 0 ]]; then
          echo_ok
       else