diff --git a/core/core_constants.cpp b/core/core_constants.cpp
index 63e7323f7a3..89926ee81b0 100644
--- a/core/core_constants.cpp
+++ b/core/core_constants.cpp
@@ -168,6 +168,7 @@ void register_global_constants() {
 	BIND_CORE_ENUM_CONSTANT(INLINE_ALIGNMENT_IMAGE_MASK);
 	BIND_CORE_ENUM_CONSTANT(INLINE_ALIGNMENT_TEXT_MASK);
 
+	BIND_CORE_ENUM_CLASS_CONSTANT(Key, KEY, NONE);
 	BIND_CORE_ENUM_CLASS_CONSTANT(Key, KEY, SPECIAL);
 	BIND_CORE_ENUM_CLASS_CONSTANT(Key, KEY, ESCAPE);
 	BIND_CORE_ENUM_CLASS_CONSTANT(Key, KEY, TAB);
@@ -422,6 +423,7 @@ void register_global_constants() {
 	BIND_CORE_ENUM_CLASS_CONSTANT(KeyModifierMask, KEY_MASK, KPAD);
 	BIND_CORE_ENUM_CLASS_CONSTANT(KeyModifierMask, KEY_MASK, GROUP_SWITCH);
 
+	BIND_CORE_ENUM_CLASS_CONSTANT(MouseButton, MOUSE_BUTTON, NONE);
 	BIND_CORE_ENUM_CLASS_CONSTANT(MouseButton, MOUSE_BUTTON, LEFT);
 	BIND_CORE_ENUM_CLASS_CONSTANT(MouseButton, MOUSE_BUTTON, RIGHT);
 	BIND_CORE_ENUM_CLASS_CONSTANT(MouseButton, MOUSE_BUTTON, MIDDLE);
@@ -472,6 +474,7 @@ void register_global_constants() {
 	BIND_CORE_ENUM_CLASS_CONSTANT(JoyAxis, JOY_AXIS, SDL_MAX);
 	BIND_CORE_ENUM_CLASS_CONSTANT(JoyAxis, JOY_AXIS, MAX);
 
+	BIND_CORE_ENUM_CLASS_CONSTANT(MIDIMessage, MIDI_MESSAGE, NONE);
 	BIND_CORE_ENUM_CLASS_CONSTANT(MIDIMessage, MIDI_MESSAGE, NOTE_OFF);
 	BIND_CORE_ENUM_CLASS_CONSTANT(MIDIMessage, MIDI_MESSAGE, NOTE_ON);
 	BIND_CORE_ENUM_CLASS_CONSTANT(MIDIMessage, MIDI_MESSAGE, AFTERTOUCH);
diff --git a/doc/classes/@GlobalScope.xml b/doc/classes/@GlobalScope.xml
index 17cb50d1a4e..3cfc6f3bd2d 100644
--- a/doc/classes/@GlobalScope.xml
+++ b/doc/classes/@GlobalScope.xml
@@ -1284,6 +1284,9 @@
 		<constant name="INLINE_ALIGNMENT_TEXT_MASK" value="12" enum="InlineAlignment">
 			A bit mask for [code]INLINE_ALIGNMENT_TO_*[/code] alignment constants.
 		</constant>
+		<constant name="KEY_NONE" value="0" enum="Key">
+			Enum value which doesn't correspond to any key. This is used to initialize [enum Key] properties with a generic state.
+		</constant>
 		<constant name="KEY_SPECIAL" value="16777216" enum="Key">
 			Keycodes with this bit applied are non-printable.
 		</constant>
@@ -2040,6 +2043,9 @@
 		<constant name="KEY_MASK_GROUP_SWITCH" value="1073741824" enum="KeyModifierMask">
 			Group Switch key mask.
 		</constant>
+		<constant name="MOUSE_BUTTON_NONE" value="0" enum="MouseButton">
+			Enum value which doesn't correspond to any mouse button. This is used to initialize [enum MouseButton] properties with a generic state.
+		</constant>
 		<constant name="MOUSE_BUTTON_LEFT" value="1" enum="MouseButton">
 			Left mouse button.
 		</constant>
@@ -2184,6 +2190,9 @@
 		<constant name="JOY_AXIS_MAX" value="10" enum="JoyAxis">
 			The maximum number of game controller axes: OpenVR supports up to 5 Joysticks making a total of 10 axes.
 		</constant>
+		<constant name="MIDI_MESSAGE_NONE" value="0" enum="MIDIMessage">
+			Enum value which doesn't correspond to any MIDI message. This is used to initialize [enum MIDIMessage] properties with a generic state.
+		</constant>
 		<constant name="MIDI_MESSAGE_NOTE_OFF" value="8" enum="MIDIMessage">
 			MIDI note OFF message. See the documentation of [InputEventMIDI] for information of how to use MIDI inputs.
 		</constant>