diff --git a/frappe/__init__.py b/frappe/__init__.py
index 9084200ee6..1717a430e2 100644
--- a/frappe/__init__.py
+++ b/frappe/__init__.py
@@ -191,8 +191,8 @@ def connect(site=None, db_name=None):
 def connect_read_only():
 	from frappe.database import get_db
 
-	local.read_only_db = get_db(local.conf.slave_host, local.conf.slave_db_name,
-		local.conf.slave_db_password)
+	local.read_only_db = get_db(host=local.conf.slave_host, user=local.conf.slave_db_name,
+		password=local.conf.slave_db_password)
 
 	# swap db connections
 	local.master_db = local.db
diff --git a/frappe/database/__init__.py b/frappe/database/__init__.py
index f00c6bf0b4..9d05223044 100644
--- a/frappe/database/__init__.py
+++ b/frappe/database/__init__.py
@@ -23,14 +23,14 @@ def drop_user_and_database(db_name, root_login=None, root_password=None):
 		import frappe.database.mariadb.setup_db
 		return frappe.database.mariadb.setup_db.drop_user_and_database(db_name, root_login, root_password)
 
-def get_db(host=None, user=None, password=None):
+def get_db(host=None, user=None, password=None, port=None):
 	import frappe
 	if frappe.conf.db_type == 'postgres':
 		import frappe.database.postgres.database
-		return frappe.database.postgres.database.PostgresDatabase(host, user, password)
+		return frappe.database.postgres.database.PostgresDatabase(host, user, password, port=port)
 	else:
 		import frappe.database.mariadb.database
-		return frappe.database.mariadb.database.MariaDBDatabase(host, user, password)
+		return frappe.database.mariadb.database.MariaDBDatabase(host, user, password, port=port)
 
 def setup_help_database(help_db_name):
 	import frappe
@@ -39,4 +39,4 @@ def setup_help_database(help_db_name):
 		return frappe.database.postgres.setup_db.setup_help_database(help_db_name)
 	else:
 		import frappe.database.mariadb.setup_db
-		return frappe.database.mariadb.setup_db.setup_help_database(help_db_name)
\ No newline at end of file
+		return frappe.database.mariadb.setup_db.setup_help_database(help_db_name)
diff --git a/frappe/database/database.py b/frappe/database/database.py
index c810dd5439..da8931ab5e 100644
--- a/frappe/database/database.py
+++ b/frappe/database/database.py
@@ -46,9 +46,10 @@ class Database(object):
 	class InvalidColumnName(frappe.ValidationError): pass
 
 
-	def __init__(self, host=None, user=None, password=None, ac_name=None, use_default=0):
+	def __init__(self, host=None, user=None, password=None, ac_name=None, use_default=0, port=None):
 		self.setup_type_map()
 		self.host = host or frappe.conf.db_host or 'localhost'
+		self.port = port or frappe.conf.db_port or ''
 		self.user = user or frappe.conf.db_name
 		self.db_name = frappe.conf.db_name
 		self._conn = None
diff --git a/frappe/database/mariadb/database.py b/frappe/database/mariadb/database.py
index b59a8fe0eb..e197349bae 100644
--- a/frappe/database/mariadb/database.py
+++ b/frappe/database/mariadb/database.py
@@ -81,11 +81,11 @@ class MariaDBDatabase(Database):
 
 		if usessl:
 			conn = pymysql.connect(self.host, self.user or '', self.password or '',
-				charset='utf8mb4', use_unicode = True, ssl=ssl_params,
+				port=self.port, charset='utf8mb4', use_unicode = True, ssl=ssl_params,
 				conv = conversions, local_infile = frappe.conf.local_infile)
 		else:
 			conn = pymysql.connect(self.host, self.user or '', self.password or '',
-				charset='utf8mb4', use_unicode = True, conv = conversions,
+				port=self.port, charset='utf8mb4', use_unicode = True, conv = conversions,
 				local_infile = frappe.conf.local_infile)
 
 		# MYSQL_OPTION_MULTI_STATEMENTS_OFF = 1
@@ -283,4 +283,4 @@ class MariaDBDatabase(Database):
 			self.begin()
 
 	def get_database_list(self, target):
-		return [d[0] for d in self.sql("SHOW DATABASES;")]
\ No newline at end of file
+		return [d[0] for d in self.sql("SHOW DATABASES;")]
diff --git a/frappe/database/postgres/database.py b/frappe/database/postgres/database.py
index ef4b220483..036ee3f34a 100644
--- a/frappe/database/postgres/database.py
+++ b/frappe/database/postgres/database.py
@@ -64,7 +64,7 @@ class PostgresDatabase(Database):
 
 	def get_connection(self):
 		# warnings.filterwarnings('ignore', category=psycopg2.Warning)
-		conn = psycopg2.connect('host={} dbname={}'.format(self.host, self.user))
+		conn = psycopg2.connect('host={} dbname={} port={}'.format(self.host, self.user, self.port))
 		conn.set_isolation_level(ISOLATION_LEVEL_AUTOCOMMIT) # TODO: Remove this
 		# conn = psycopg2.connect('host={} dbname={} user={} password={}'.format(self.host,
 		# 	self.user, self.user, self.password))