diff --git a/luci-app-passwall/luasrc/passwall/api.lua b/luci-app-passwall/luasrc/passwall/api.lua
index b8bf472f0..d34fe074a 100644
--- a/luci-app-passwall/luasrc/passwall/api.lua
+++ b/luci-app-passwall/luasrc/passwall/api.lua
@@ -615,38 +615,38 @@ function parseURL(url)
 	if not url or url == "" then
 		return nil
 	end
-    local pattern = "^(%w+)://"
-    local protocol = url:match(pattern)
+	local pattern = "^(%w+)://"
+	local protocol = url:match(pattern)
 
-    if not protocol then
-        --error("Invalid URL: " .. url)
-        return nil
-    end
+	if not protocol then
+		--error("Invalid URL: " .. url)
+		return nil
+	end
 
-    local auth_host_port = url:sub(#protocol + 4)
-    local auth_pattern = "^([^@]+)@"
-    local auth = auth_host_port:match(auth_pattern)
-    local username, password
+	local auth_host_port = url:sub(#protocol + 4)
+	local auth_pattern = "^([^@]+)@"
+	local auth = auth_host_port:match(auth_pattern)
+	local username, password
 
-    if auth then
-        username, password = auth:match("^([^:]+):([^:]+)$")
-        auth_host_port = auth_host_port:sub(#auth + 2)
-    end
+	if auth then
+		username, password = auth:match("^([^:]+):([^:]+)$")
+		auth_host_port = auth_host_port:sub(#auth + 2)
+	end
 
-    local host, port = auth_host_port:match("^([^:]+):(%d+)$")
+	local host, port = auth_host_port:match("^([^:]+):(%d+)$")
 
-    if not host or not port then
-        --error("Invalid URL: " .. url)
-        return nil
-    end
+	if not host or not port then
+		--error("Invalid URL: " .. url)
+		return nil
+	end
 
-    return {
-        protocol = protocol,
-        username = username,
-        password = password,
-        host = host,
-        port = tonumber(port)
-    }
+	return {
+		protocol = protocol,
+		username = username,
+		password = password,
+		host = host,
+		port = tonumber(port)
+	}
 end
 
 local default_file_tree = {