diff --git a/code/modules/projectiles/ammunition.dm b/code/modules/projectiles/ammunition.dm
index 86baf63b38e..b9748d7257f 100644
--- a/code/modules/projectiles/ammunition.dm
+++ b/code/modules/projectiles/ammunition.dm
@@ -107,7 +107,7 @@
 	return ..()
 
 /obj/item/ammo_casing/emp_act(severity)
-	BB.emp_act(severity)
+	BB?.emp_act(severity)
 
 #define AMMO_MULTI_SPRITE_STEP_NONE null
 #define AMMO_MULTI_SPRITE_STEP_ON_OFF -1