diff --git a/code/modules/defenses/sentry.dm b/code/modules/defenses/sentry.dm
index 914aa7bf95ff..86464d97f5a3 100644
--- a/code/modules/defenses/sentry.dm
+++ b/code/modules/defenses/sentry.dm
@@ -1,6 +1,5 @@
 #define SENTRY_FIREANGLE 135
 #define SENTRY_RANGE 5
-#define SENTRY_MUZZLELUM 3
 #define SENTRY_ENGAGED_TIMEOUT 60 SECONDS
 #define SENTRY_LOW_AMMO_TIMEOUT 20 SECONDS
 #define SENTRY_LOW_AMMO_ALERT_PERCENTAGE 0.25
@@ -723,4 +722,3 @@
 
 #undef SENTRY_FIREANGLE
 #undef SENTRY_RANGE
-#undef SENTRY_MUZZLELUM