diff --git a/android/src/com/mapswithme/util/HttpClient.java b/android/src/com/mapswithme/util/HttpClient.java
index 8777e5a44b..c80ebdbabb 100644
--- a/android/src/com/mapswithme/util/HttpClient.java
+++ b/android/src/com/mapswithme/util/HttpClient.java
@@ -154,7 +154,7 @@ public final class HttpClient
           if (header.getKey() == null || header.getValue() == null)
             continue;
 
-          p.headers.add(new HttpHeader(header.getKey(), TextUtils.join(", ", header.getValue())));
+          p.headers.add(new HttpHeader(header.getKey().toLowerCase(), TextUtils.join(", ", header.getValue())));
         }
       }
       else
diff --git a/platform/http_client_apple.mm b/platform/http_client_apple.mm
index ca37a82a73..2157776b3c 100644
--- a/platform/http_client_apple.mm
+++ b/platform/http_client_apple.mm
@@ -110,7 +110,7 @@ bool HttpClient::RunHttpRequest()
     {
       [response.allHeaderFields enumerateKeysAndObjectsUsingBlock:^(NSString * key, NSString * obj, BOOL * stop)
       {
-        m_headers.emplace(key.UTF8String, obj.UTF8String);
+        m_headers.emplace(key.lowercaseString.UTF8String, obj.UTF8String);
       }];
     }
     else
diff --git a/platform/http_client_curl.cpp b/platform/http_client_curl.cpp
index 0e69a2facd..ed78555136 100644
--- a/platform/http_client_curl.cpp
+++ b/platform/http_client_curl.cpp
@@ -208,6 +208,7 @@ bool HttpClient::RunHttpRequest()
   m_headers.clear();
   Headers const headers = ParseHeaders(ReadFileAsString(headers_deleter.m_fileName));
   string serverCookies;
+  string headerKey;
   for (auto const & header : headers)
   {
     if (header.first == "Set-Cookie")
@@ -220,7 +221,11 @@ bool HttpClient::RunHttpRequest()
         m_urlReceived = header.second;
 
       if (m_loadHeaders)
-        m_headers.emplace(header.first, header.second);
+      {
+        headerKey = header.first;
+        strings::AsciiToLower(headerKey);
+        m_headers.emplace(headerKey, header.second);
+      }
     }
   }
   m_headers.emplace("Set-Cookie", NormalizeServerCookies(move(serverCookies)));
diff --git a/traffic/traffic_info.cpp b/traffic/traffic_info.cpp
index 9d0501dcd7..25d3d92889 100644
--- a/traffic/traffic_info.cpp
+++ b/traffic/traffic_info.cpp
@@ -76,7 +76,7 @@ string MakeRemoteURL(string const & name, uint64_t version)
   return ss.str();
 }
 
-char const kETag[] = "Etag";
+char const kETag[] = "etag";
 }  // namespace
 
 // TrafficInfo::RoadSegmentId -----------------------------------------------------------------