diff --git a/code/modules/movespeed/modifiers/mobs.dm b/code/modules/movespeed/modifiers/mobs.dm
index b7b18424cd0..03e51a533d5 100644
--- a/code/modules/movespeed/modifiers/mobs.dm
+++ b/code/modules/movespeed/modifiers/mobs.dm
@@ -127,7 +127,7 @@
 	multiplicative_slowdown = 5
 
 /datum/movespeed_modifier/morph_disguised
-	multiplicative_slowdown = 1
+	multiplicative_slowdown = -1
 
 /datum/movespeed_modifier/auto_wash
 	multiplicative_slowdown = 3