diff --git a/proto b/proto
index 39bb8b26..b8c0499f 160000
--- a/proto
+++ b/proto
@@ -1 +1 @@
-Subproject commit 39bb8b26bbc107aae3586d5a5e11a06ea12680bc
+Subproject commit b8c0499f28f9673d1df17d04da562e30703f01cb
diff --git a/src/mesh/generated/admin.pb.h b/src/mesh/generated/admin.pb.h
index d68103ce..cf71a9cb 100644
--- a/src/mesh/generated/admin.pb.h
+++ b/src/mesh/generated/admin.pb.h
@@ -25,6 +25,7 @@ typedef struct _AdminMessage {
         Channel get_channel_response;
         bool confirm_set_channel;
         bool confirm_set_radio;
+        bool exit_simulator;
     };
 } AdminMessage;
 
@@ -47,6 +48,7 @@ extern "C" {
 #define AdminMessage_get_channel_response_tag    7
 #define AdminMessage_confirm_set_channel_tag     32
 #define AdminMessage_confirm_set_radio_tag       33
+#define AdminMessage_exit_simulator_tag          34
 
 /* Struct field encoding specification for nanopb */
 #define AdminMessage_FIELDLIST(X, a) \
@@ -58,7 +60,8 @@ X(a, STATIC,   ONEOF,    MESSAGE,  (variant,get_radio_response,get_radio_respons
 X(a, STATIC,   ONEOF,    UINT32,   (variant,get_channel_request,get_channel_request),   6) \
 X(a, STATIC,   ONEOF,    MESSAGE,  (variant,get_channel_response,get_channel_response),   7) \
 X(a, STATIC,   ONEOF,    BOOL,     (variant,confirm_set_channel,confirm_set_channel),  32) \
-X(a, STATIC,   ONEOF,    BOOL,     (variant,confirm_set_radio,confirm_set_radio),  33)
+X(a, STATIC,   ONEOF,    BOOL,     (variant,confirm_set_radio,confirm_set_radio),  33) \
+X(a, STATIC,   ONEOF,    BOOL,     (variant,exit_simulator,exit_simulator),  34)
 #define AdminMessage_CALLBACK NULL
 #define AdminMessage_DEFAULT NULL
 #define AdminMessage_variant_set_radio_MSGTYPE RadioConfig
diff --git a/src/plugins/AdminPlugin.cpp b/src/plugins/AdminPlugin.cpp
index 96b5c51a..9d935b26 100644
--- a/src/plugins/AdminPlugin.cpp
+++ b/src/plugins/AdminPlugin.cpp
@@ -6,6 +6,10 @@
 #include "configuration.h"
 #include "main.h"
 
+#ifdef PORTDUINO
+#include "unistd.h"
+#endif
+
 AdminPlugin *adminPlugin;
 
 void AdminPlugin::handleGetChannel(const MeshPacket &req, uint32_t channelIndex)
@@ -65,6 +69,13 @@ bool AdminPlugin::handleReceivedProtobuf(const MeshPacket &mp, const AdminMessag
         handleGetRadio(mp);
         break;
 
+#ifdef PORTDUINO
+    case AdminMessage_exit_simulator_tag:
+        DEBUG_MSG("Exiting simulator");
+        _exit(0);
+        break;
+#endif
+
     default:
         // Probably a message sent by us or sent to our local node.  FIXME, we should avoid scanning these messages
         DEBUG_MSG("Ignoring nonrelevant admin %d\n", r->which_variant);