diff --git a/code/controllers/subsystem/throwing.dm b/code/controllers/subsystem/throwing.dm
index 97c920125ab..184a56fea58 100644
--- a/code/controllers/subsystem/throwing.dm
+++ b/code/controllers/subsystem/throwing.dm
@@ -57,7 +57,7 @@ SUBSYSTEM_DEF(throwing)
 	var/maxrange
 	///The speed of the projectile thrownthing being thrown.
 	var/speed
-	///If a mob is the one who has thrown the object, then it's moved here.
+	///If a mob is the one who has thrown the object, then it's moved here. This can be null and must be null checked before trying to use it.
 	var/mob/thrower
 	///A variable that helps in describing objects thrown at an angle, if it should be moved diagonally first or last.
 	var/diagonals_first