diff --git a/src/MaaCore/Controller/AdbController.cpp b/src/MaaCore/Controller/AdbController.cpp
index dcbd9b236d..df130c0633 100644
--- a/src/MaaCore/Controller/AdbController.cpp
+++ b/src/MaaCore/Controller/AdbController.cpp
@@ -211,7 +211,12 @@ int asst::AdbController::get_mumu_index(const std::string& address)
         return 0;
     }
     int port = std::stoi(port_str);
-    int mumu_index = (port - 16384) / 32; // must be int
+    int mumu_index = 0;
+    if (port >= 16384) {
+        mumu_index = (port - 16384) / 32;
+    } else if (port >= 5555) {
+        mumu_index = (port - 5555) / 2;
+    }
     LogInfo << VAR(port_str) << VAR(port) << VAR(mumu_index);
     return mumu_index;
 }
diff --git a/src/MaaWpfGui/Helper/EmulatorHelper.cs b/src/MaaWpfGui/Helper/EmulatorHelper.cs
index 0ed7593e31..db534b88d6 100644
--- a/src/MaaWpfGui/Helper/EmulatorHelper.cs
+++ b/src/MaaWpfGui/Helper/EmulatorHelper.cs
@@ -81,7 +81,18 @@ public class EmulatorHelper
             string portStr = address.Split(':')[1];
             if (int.TryParse(portStr, out int port))
             {
-                emuIndex = (port - 16384) / 32;
+                switch (port)
+                {
+                    case >= 16384:
+                        emuIndex = (port - 16384) / 32;
+                        break;
+                    case >= 5555:
+                        emuIndex = (port - 5555) / 2;
+                        break;
+                    default:
+                        _logger.Error("Port {Port} is not valid for MuMuEmulator12", port);
+                        return false;
+                }
             }
             else
             {