diff --git a/source/pr_cmds.c b/source/pr_cmds.c
index 6d32f1b..e4ac6cd 100644
--- a/source/pr_cmds.c
+++ b/source/pr_cmds.c
@@ -1299,6 +1299,21 @@ void PF_GrenadePulse(void)
 	MSG_WriteByte (&client->message,svc_pulse);
 }
 
+/*
+=================
+PF_MaxZombies
+
+Returns the total number of zombies
+the platform can have out at once.
+
+nzp_maxai()
+=================
+*/
+void PF_MaxZombies(void)
+{
+	G_FLOAT(OFS_RETURN) = 24;
+}
+
 /*
 =================
 PF_achievement
@@ -3788,7 +3803,8 @@ static builtin_t pr_builtin[] =
 	NULL, 						// #499
 	PF_SongEgg,					// #500
 	PF_MaxAmmo,					// #501
-	PF_GrenadePulse,			// #502
+	PF_GrenadePulse,				// #502
+	PF_MaxZombies, 					// #503
 };
 
 builtin_t *pr_builtins = pr_builtin;