diff --git a/tdutils/td/utils/HttpUrl.cpp b/tdutils/td/utils/HttpUrl.cpp
index 9a0cdc8b..5663045d 100644
--- a/tdutils/td/utils/HttpUrl.cpp
+++ b/tdutils/td/utils/HttpUrl.cpp
@@ -95,6 +95,9 @@ Result<HttpUrl> parse_url(MutableSlice url, HttpUrl::Protocol default_protocol)
   if (host.empty()) {
     return Status::Error("URL host is empty");
   }
+  if (host == ".") {
+    return Status::Error("Host is invalid");
+  }
 
   int specified_port = port;
   if (port == 0) {