diff --git a/code/__DEFINES/traits.dm b/code/__DEFINES/traits.dm
index 0e30a2ed805c..375c87cd6571 100644
--- a/code/__DEFINES/traits.dm
+++ b/code/__DEFINES/traits.dm
@@ -143,8 +143,6 @@
 // #define TRAIT_X "t_x"
 
 //-- mob traits --
-/// Prevents voluntary movement.
-#define TRAIT_IMMOBILIZED "immobilized"
 /// Apply this to make a mob not dense, and remove it when you want it to no longer make them undense, other sorces of undesity will still apply. Always define a unique source when adding a new instance of this!
 #define TRAIT_UNDENSE "undense"
 /// Forces the user to stay unconscious.