diff --git a/src/SFML/Network/Http.cpp b/src/SFML/Network/Http.cpp
index be179d4ee..e221d07ae 100644
--- a/src/SFML/Network/Http.cpp
+++ b/src/SFML/Network/Http.cpp
@@ -137,7 +137,7 @@ std::string Http::Request::Prepare() const
 ////////////////////////////////////////////////////////////
 bool Http::Request::HasField(const std::string& field) const
 {
-    return myFields.find(field) != myFields.end();
+    return myFields.find(ToLower(field)) != myFields.end();
 }