diff --git a/web/middleware/domainValidator.go b/web/middleware/domainValidator.go
index 2beecfdb..c94130c0 100644
--- a/web/middleware/domainValidator.go
+++ b/web/middleware/domainValidator.go
@@ -3,13 +3,17 @@ package middleware
 import (
 	"net"
 	"net/http"
+	"strings"
 
 	"github.com/gin-gonic/gin"
 )
 
 func DomainValidatorMiddleware(domain string) gin.HandlerFunc {
 	return func(c *gin.Context) {
-		host, _, _ := net.SplitHostPort(c.Request.Host)
+		host := c.Request.Host
+		if colonIndex := strings.LastIndex(host, ":"); colonIndex != -1 {
+			host, _, _ = net.SplitHostPort(c.Request.Host)
+		}
 
 		if host != domain {
 			c.AbortWithStatus(http.StatusForbidden)