diff --git a/code/game/gamemodes/dynamic/dynamic.dm b/code/game/gamemodes/dynamic/dynamic.dm
index 07ec3432fa..ab62a08cb1 100644
--- a/code/game/gamemodes/dynamic/dynamic.dm
+++ b/code/game/gamemodes/dynamic/dynamic.dm
@@ -632,8 +632,11 @@ GLOBAL_VAR_INIT(dynamic_forced_threat_level, -1)
 
 		if (prob(get_injection_chance()))
 			var/list/drafted_rules = list()
+			var/antag_num = current_players[CURRENT_LIVING_ANTAGS].len
 			for (var/datum/dynamic_ruleset/midround/rule in midround_rules)
-				if (rule.acceptable(current_players[CURRENT_LIVING_PLAYERS].len, threat_level) && threat >= rule.cost)
+				var/antag_acceptable = (antag_num || !isnull(rule.antag_flag))
+				// if there are antags OR the rule is an antag rule, antag_acceptable will be true.
+				if (antag_acceptable && rule.acceptable(current_players[CURRENT_LIVING_PLAYERS].len, threat_level) && threat >= rule.cost)
 					// Classic secret : only autotraitor/minor roles
 					if (GLOB.dynamic_classic_secret && !((rule.flags & TRAITOR_RULESET) || (rule.flags & MINOR_RULESET)))
 						continue
diff --git a/code/game/gamemodes/dynamic/dynamic_rulesets_midround.dm b/code/game/gamemodes/dynamic/dynamic_rulesets_midround.dm
index 512420f3b1..e823a364ae 100644
--- a/code/game/gamemodes/dynamic/dynamic_rulesets_midround.dm
+++ b/code/game/gamemodes/dynamic/dynamic_rulesets_midround.dm
@@ -724,9 +724,10 @@
 	return Ninja
 
 /datum/dynamic_ruleset/midround/event/pirates
-	name = "Pirates"
+	name = "Space Pirates"
 	config_tag = "pirates"
 	typepath = /datum/round_event/pirates
+	antag_flag = ROLE_TRAITOR
 	enemy_roles = list("AI","Security Officer","Head of Security","Captain")
 	required_enemies = list(2,2,1,1,0,0,0,0,0,0)
 	weight = 5