diff --git a/src/g_heretic/a_hereticartifacts.cpp b/src/g_heretic/a_hereticartifacts.cpp
index 65a5a58598..459625cfdf 100644
--- a/src/g_heretic/a_hereticartifacts.cpp
+++ b/src/g_heretic/a_hereticartifacts.cpp
@@ -72,7 +72,7 @@ bool AArtiTimeBomb::Use (bool pickup)
 {
 	angle_t angle = Owner->angle >> ANGLETOFINESHIFT;
 	AActor *mo = Spawn("ActivatedTimeBomb",
-		Vec3Angle(24*FRACUNIT, Owner->angle, - Owner->floorclip), ALLOW_REPLACE);
+		Owner->Vec3Angle(24*FRACUNIT, Owner->angle, - Owner->floorclip), ALLOW_REPLACE);
 	mo->target = Owner;
 	return true;
 }