diff --git a/frappe/utils/data.py b/frappe/utils/data.py
index 1dd3270109..d1a5a51511 100644
--- a/frappe/utils/data.py
+++ b/frappe/utils/data.py
@@ -728,13 +728,17 @@ def get_url(uri=None, full_address=False):
 
 	port = frappe.conf.http_port or frappe.conf.webserver_port
 
-	if host_name and ':' not in host_name and port:
+	if host_name and not url_contains_port(host_name) and port:
 		host_name = host_name + ':' + str(port)
 
 	url = urljoin(host_name, uri) if uri else host_name
 
 	return url
 
+def url_contains_port(url):
+	parts = url.split(':')
+	return len(parts) > 2
+
 def get_host_name():
 	return get_url().rsplit("//", 1)[-1]