diff --git a/launcher/GetAuthlibInjectorApiLocation.cpp b/launcher/GetAuthlibInjectorApiLocation.cpp
index 235e8c9e5..ad7a5825c 100644
--- a/launcher/GetAuthlibInjectorApiLocation.cpp
+++ b/launcher/GetAuthlibInjectorApiLocation.cpp
@@ -72,7 +72,8 @@ auto GetAuthlibInjectorApiLocation::Sink::finalize(QNetworkReply& reply) -> Task
         qDebug() << "X-Authlib-Injector-API-Location header not found!";
     }
 
-    m_outer.m_account.reset(MinecraftAccount::createFromUsernameAuthlibInjector(m_outer.m_username, url.toString()));
+    const auto & encodedUrl = url.toEncoded(QUrl::FullyEncoded);
+    m_outer.m_account.reset(MinecraftAccount::createFromUsernameAuthlibInjector(m_outer.m_username, encodedUrl));
     return Task::State::Succeeded;
 }