diff --git a/api.json b/api.json
index 5d4d72effe64..62055d17d763 100644
--- a/api.json
+++ b/api.json
@@ -6,7 +6,7 @@
 		"singleton": true,
 		"singleton_name": "GlobalConstants",
 		"instanciable": false,
-		"is_reference": false,
+		"is_reference": true,
 		"constants": {
 			"BUTTON_LEFT": 1,
 			"BUTTON_MASK_LEFT": 1,
@@ -203,6 +203,15 @@
 			"KEY_BRACKETLEFT": 91,
 			"KEY_BRACKETRIGHT": 93,
 			"KEY_BROKENBAR": 166,
+			"KEY_BUTTON_LEFT": 4096,
+			"KEY_BUTTON_MIDDLE": 4098,
+			"KEY_BUTTON_RIGHT": 4097,
+			"KEY_BUTTON_WHEEL_DOWN": 4102,
+			"KEY_BUTTON_WHEEL_LEFT": 4103,
+			"KEY_BUTTON_WHEEL_RIGHT": 4104,
+			"KEY_BUTTON_WHEEL_UP": 4101,
+			"KEY_BUTTON_XBUTTON1": 4099,
+			"KEY_BUTTON_XBUTTON2": 4100,
 			"KEY_C": 67,
 			"KEY_CAPSLOCK": 16777241,
 			"KEY_CCEDILLA": 199,