diff --git a/code/__DEFINES/movespeed_modification.dm b/code/__DEFINES/movespeed_modification.dm
index d224c0f1..0fadae6d 100644
--- a/code/__DEFINES/movespeed_modification.dm
+++ b/code/__DEFINES/movespeed_modification.dm
@@ -37,5 +37,7 @@
 #define MOVESPEED_ID_PRONE_DRAGGING                     "PRONE_DRAG"
 #define MOVESPEED_ID_HUMAN_CARRYING                     "HUMAN_CARRY"
 
+#define MOVESPEED_ID_SILICON_VTEC                     "SILICON_VTEC"
+
 #define MOVESPEED_ID_SHRUNK								"SHRINK_SPEED_MODIFIER"
 #define MOVESPEED_ID_GROW								"GROWTH_SPEED_MODIFIER"