diff --git a/launcher/net/Download.cpp b/launcher/net/Download.cpp
index f199c0b2..e8a1d0b0 100644
--- a/launcher/net/Download.cpp
+++ b/launcher/net/Download.cpp
@@ -114,11 +114,11 @@ void Download::executeTask()
     }
 
     request.setHeader(QNetworkRequest::UserAgentHeader, APPLICATION->getUserAgent().toUtf8());
-    // TODO remove duplication and use constant
-    if (APPLICATION->capabilities() & Application::SupportsFlame
-            && request.url().host() == "api.curseforge.com") {
+    // TODO remove duplication
+    if (APPLICATION->capabilities() & Application::SupportsFlame && request.url().host() == QUrl(BuildConfig.FLAME_BASE_URL).host()) {
         request.setRawHeader("x-api-key", APPLICATION->getFlameAPIKey().toUtf8());
-    } else if (request.url().host() == "api.modrinth.com") {
+    } else if (request.url().host() == QUrl(BuildConfig.MODRINTH_PROD_URL).host() ||
+               request.url().host() == QUrl(BuildConfig.MODRINTH_STAGING_URL).host()) {
         QString token = APPLICATION->getModrinthAPIToken();
         if (!token.isNull())
             request.setRawHeader("Authorization", token.toUtf8());
diff --git a/launcher/net/Upload.cpp b/launcher/net/Upload.cpp
index b90c71ba..ccf43c2d 100644
--- a/launcher/net/Upload.cpp
+++ b/launcher/net/Upload.cpp
@@ -217,11 +217,11 @@ namespace Net {
         }
 
         request.setHeader(QNetworkRequest::UserAgentHeader, APPLICATION->getUserAgent().toUtf8());
-        // TODO remove duplication and use constant
-        if (APPLICATION->capabilities() & Application::SupportsFlame
-                && request.url().host() == "api.curseforge.com") {
+        // TODO remove duplication
+        if (APPLICATION->capabilities() & Application::SupportsFlame && request.url().host() == QUrl(BuildConfig.FLAME_BASE_URL).host()) {
             request.setRawHeader("x-api-key", APPLICATION->getFlameAPIKey().toUtf8());
-        } else if (request.url().host() == "api.modrinth.com") {
+        } else if (request.url().host() == QUrl(BuildConfig.MODRINTH_PROD_URL).host() ||
+                   request.url().host() == QUrl(BuildConfig.MODRINTH_STAGING_URL).host()) {
             QString token = APPLICATION->getModrinthAPIToken();
             if (!token.isNull())
                 request.setRawHeader("Authorization", token.toUtf8());