diff --git a/platformio/commands/debug/server.py b/platformio/commands/debug/server.py
index 33800bd5..6d81585e 100644
--- a/platformio/commands/debug/server.py
+++ b/platformio/commands/debug/server.py
@@ -100,6 +100,8 @@ class DebugServer(BaseProcess):
                 self._debug_port = ":2000"
             elif "jlink" in server_executable.lower():
                 self._debug_port = ":2331"
+            elif "qemu" in server_executable.lower():
+                self._debug_port = ":1234"
 
         return self._transport