diff --git a/frappe/website/doctype/website_theme/website_theme.py b/frappe/website/doctype/website_theme/website_theme.py
index bb443c53d4..74a336c26e 100644
--- a/frappe/website/doctype/website_theme/website_theme.py
+++ b/frappe/website/doctype/website_theme/website_theme.py
@@ -64,7 +64,7 @@ class WebsiteTheme(Document):
 		content = content.replace('\n', '\\n')
 		command = ['node', 'generate_bootstrap_theme.js', file_name, content]
 		frappe.commands.popen(command, cwd=frappe.get_app_path('frappe', '..'), shell=False)
-		self.css_file_url = 'assets/frappe/website_theme/' + file_name
+		self.css_file_url = '/assets/frappe/website_theme/' + file_name
 
 	def use_theme(self):
 		use_theme(self.name)