diff --git a/td/telegram/net/ConnectionCreator.cpp b/td/telegram/net/ConnectionCreator.cpp
index 57d4bc88..47e31996 100644
--- a/td/telegram/net/ConnectionCreator.cpp
+++ b/td/telegram/net/ConnectionCreator.cpp
@@ -661,9 +661,9 @@ Result<mtproto::TransportType> ConnectionCreator::get_transport_type(const Proxy
     if (!proxy.user().empty() || !proxy.password().empty()) {
       proxy_authorization = "|basic " + base64_encode(PSLICE() << proxy.user() << ':' << proxy.password());
     }
-    return mtproto::TransportType{
-        mtproto::TransportType::Http, 0,
-        mtproto::ProxySecret::from_raw(PSTRING() << info.option->get_ip_address().get_ip_str() << proxy_authorization)};
+    return mtproto::TransportType{mtproto::TransportType::Http, 0,
+                                  mtproto::ProxySecret::from_raw(
+                                      PSTRING() << info.option->get_ip_address().get_ip_host() << proxy_authorization)};
   }
 
   if (info.use_http) {
diff --git a/tdnet/td/net/HttpProxy.cpp b/tdnet/td/net/HttpProxy.cpp
index b604e2e3..87c34f9b 100644
--- a/tdnet/td/net/HttpProxy.cpp
+++ b/tdnet/td/net/HttpProxy.cpp
@@ -47,7 +47,7 @@ Status HttpProxy::wait_connect_response() {
     size_t len = min(sizeof(buf), it.size());
     it.advance(len, MutableSlice{buf, sizeof(buf)});
     VLOG(proxy) << "Failed to connect: " << format::escaped(Slice(buf, len));
-    return Status::Error(PSLICE() << "Failed to connect to " << ip_address_.get_ip_str() << ':'
+    return Status::Error(PSLICE() << "Failed to connect to " << ip_address_.get_ip_host() << ':'
                                   << ip_address_.get_port());
   }
 
diff --git a/tdutils/td/utils/port/IPAddress.cpp b/tdutils/td/utils/port/IPAddress.cpp
index 32b1acef..275184c6 100644
--- a/tdutils/td/utils/port/IPAddress.cpp
+++ b/tdutils/td/utils/port/IPAddress.cpp
@@ -545,6 +545,22 @@ CSlice IPAddress::get_ip_str() const {
   }
 }
 
+string IPAddress::get_ip_host() const {
+  if (!is_valid()) {
+    return "0.0.0.0";
+  }
+
+  switch (get_address_family()) {
+    case AF_INET6:
+      return PSTRING() << '[' << ::td::get_ip_str(AF_INET6, &ipv6_addr_.sin6_addr) << ']';
+    case AF_INET:
+      return ::td::get_ip_str(AF_INET, &ipv4_addr_.sin_addr).str();
+    default:
+      UNREACHABLE();
+      return string();
+  }
+}
+
 int IPAddress::get_port() const {
   if (!is_valid()) {
     return 0;
@@ -624,12 +640,7 @@ StringBuilder &operator<<(StringBuilder &builder, const IPAddress &address) {
   if (!address.is_valid()) {
     return builder << "[invalid]";
   }
-  if (address.is_ipv4()) {
-    return builder << "[" << address.get_ip_str() << ":" << address.get_port() << "]";
-  } else {
-    CHECK(address.is_ipv6());
-    return builder << "[[" << address.get_ip_str() << "]:" << address.get_port() << "]";
-  }
+  return builder << "[" << address.get_ip_host() << ":" << address.get_port() << "]";
 }
 
 }  // namespace td
diff --git a/tdutils/td/utils/port/IPAddress.h b/tdutils/td/utils/port/IPAddress.h
index 4af10c11..7673d1b1 100644
--- a/tdutils/td/utils/port/IPAddress.h
+++ b/tdutils/td/utils/port/IPAddress.h
@@ -44,6 +44,9 @@ class IPAddress {
   // returns result in a static thread-local buffer, which may be overwritten by any subsequent method call
   CSlice get_ip_str() const;
 
+  // returns IP address as a host, i.e. IPv4 or [IPv6]
+  string get_ip_host() const;
+
   static string ipv4_to_str(uint32 ipv4);
   static string ipv6_to_str(Slice ipv6);