diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index 7d21b5e8ff..d024fd9638 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -3011,7 +3011,15 @@ void GUI_App::MacOpenURL(const wxString& url)
         BOOST_LOG_TRIVIAL(error) << "Recieved command to open URL, but it is not allowed in app configuration. URL: " << url;
         return;
     }
-    start_download(into_u8(url));
+
+    std::string narrow_url = into_u8(url);
+    if (boost::starts_with(narrow_url, "prusaslicer://open?file=")) {
+        start_download(std::move(narrow_url));
+    } else if (boost::starts_with(narrow_url, "prusaslicer://login")) {
+        plater()->get_user_account()->on_login_code_recieved(std::move(narrow_url));
+    } else {
+        BOOST_LOG_TRIVIAL(error) << "MacOpenURL recieved improper URL: " << url;
+    }
 }
 
 #endif /* __APPLE */
diff --git a/src/slic3r/GUI/UserAccount.hpp b/src/slic3r/GUI/UserAccount.hpp
index fa792afb2f..dab6fed62b 100644
--- a/src/slic3r/GUI/UserAccount.hpp
+++ b/src/slic3r/GUI/UserAccount.hpp
@@ -55,7 +55,7 @@ public:
     std::string get_access_token();
     const ConnectPrinterStateMap& get_printer_state_map() const { return m_printer_map; }
     const std::map<std::string, std::string> get_user_data() const { return m_user_data; }
-    std::string get_connect_address() const { return "https://connect.prusa3d.com"; }
+    std::string get_connect_address() const { return "https://dev.connect.prusa3d.com"; }
 
     // standalone utility methods
     std::string get_model_from_json(const std::string& message) const;