diff --git a/Core/Debugger/WebSocket/InputSubscriber.cpp b/Core/Debugger/WebSocket/InputSubscriber.cpp
index e15c124463..95365b498f 100644
--- a/Core/Debugger/WebSocket/InputSubscriber.cpp
+++ b/Core/Debugger/WebSocket/InputSubscriber.cpp
@@ -50,6 +50,11 @@ const std::unordered_map<std::string, uint32_t> buttonLookup = {
 	{ "forward", CTRL_FORWARD },
 	{ "back", CTRL_BACK },
 	{ "playpause", CTRL_PLAYPAUSE },
+	// Obscure unmapped keys, see issue #17464
+	{ "l2", CTRL_L2 },
+	{ "l3", CTRL_L3 },
+	{ "r2", CTRL_R2 },
+	{ "r3", CTRL_R3 },
 };
 
 struct WebSocketInputState : public DebuggerSubscriber {
diff --git a/Core/HLE/sceCtrl.h b/Core/HLE/sceCtrl.h
index f4a65b6760..220c5d341a 100644
--- a/Core/HLE/sceCtrl.h
+++ b/Core/HLE/sceCtrl.h
@@ -55,10 +55,16 @@ const int CTRL_STICK_RIGHT = 1;
 #define CTRL_BACK         0x20000000
 #define CTRL_PLAYPAUSE    0x40000000
 
+// Obscure extra keys that were never mapped to hardware, but can be used to bring up the debug menu in SOTN, see issue #17464
+#define CTRL_L3 0x0002
+#define CTRL_R3 0x0004
+#define CTRL_L2 0x0400
+#define CTRL_R2 0x0800
+
 #define CTRL_MASK_DPAD    (CTRL_UP | CTRL_DOWN | CTRL_LEFT | CTRL_RIGHT)
 #define CTRL_MASK_ACTION  (CTRL_SQUARE | CTRL_TRIANGLE | CTRL_CIRCLE | CTRL_CROSS)
 #define CTRL_MASK_TRIGGER (CTRL_LTRIGGER | CTRL_RTRIGGER)
-#define CTRL_MASK_USER    (CTRL_MASK_DPAD | CTRL_MASK_ACTION | CTRL_START | CTRL_SELECT | CTRL_MASK_TRIGGER | CTRL_HOME | CTRL_HOLD | CTRL_WLAN | CTRL_REMOTE_HOLD | CTRL_VOL_UP | CTRL_VOL_DOWN | CTRL_SCREEN | CTRL_NOTE)
+#define CTRL_MASK_USER    (CTRL_MASK_DPAD | CTRL_MASK_ACTION | CTRL_START | CTRL_SELECT | CTRL_MASK_TRIGGER | CTRL_HOME | CTRL_HOLD | CTRL_WLAN | CTRL_REMOTE_HOLD | CTRL_VOL_UP | CTRL_VOL_DOWN | CTRL_SCREEN | CTRL_NOTE | CTRL_L2 | CTRL_L3 | CTRL_R2 | CTRL_R3)
 
 void __CtrlInit();
 void __CtrlDoState(PointerWrap &p);
diff --git a/Core/KeyMap.cpp b/Core/KeyMap.cpp
index ca7b10fb12..981633e3b9 100644
--- a/Core/KeyMap.cpp
+++ b/Core/KeyMap.cpp
@@ -474,6 +474,10 @@ const KeyMap_IntStrPair psp_button_names[] = {
 	{CTRL_VOL_DOWN, "Vol -"},
 	{CTRL_SCREEN, "Screen"},
 	{CTRL_NOTE, "Note"},
+	{CTRL_L2, "Dev-kit L2"},
+	{CTRL_L3, "Dev-kit L3"},
+	{CTRL_R2, "Dev-kit R2"},
+	{CTRL_R3, "Dev-kit R3"},
 };
 
 // key here can be other things than InputKeyCode.