diff --git a/platformio/device/monitor/command.py b/platformio/device/monitor/command.py
index a36b1243..a4abd767 100644
--- a/platformio/device/monitor/command.py
+++ b/platformio/device/monitor/command.py
@@ -113,7 +113,7 @@ def device_monitor_cmd(**kwargs):  # pylint: disable=too-many-branches
             board_config=platform.board_config(project_options.get("board"))
             if platform and project_options.get("board")
             else None,
-            upload_protocol=project_options.get("upload_port"),
+            upload_protocol=project_options.get("upload_protocol"),
         )
 
     # override system argv with patched options
diff --git a/platformio/test/runners/readers/serial.py b/platformio/test/runners/readers/serial.py
index 195298a0..5ac5e0f3 100644
--- a/platformio/test/runners/readers/serial.py
+++ b/platformio/test/runners/readers/serial.py
@@ -71,7 +71,7 @@ class SerialTestOutputReader:
             board_config=self.test_runner.platform.board_config(
                 project_options["board"]
             ),
-            upload_protocol=project_options.get("upload_port"),
+            upload_protocol=project_options.get("upload_protocol"),
             ensure_ready=True,
         )