diff --git a/monster/dragon/wyvern.arc b/monster/dragon/wyvern.arc
index 03875d256..2cfeb992c 100644
--- a/monster/dragon/wyvern.arc
+++ b/monster/dragon/wyvern.arc
@@ -46,10 +46,10 @@ face wyvern.x71
 color_fg green
 anim
 facings 2
-wyvern.x71
-wyvern.x72
 wyvern.x31
 wyvern.x32
+wyvern.x71
+wyvern.x72
 mina
 monster 1
 move_type walk
diff --git a/monster/dragon/wyvern.base.131.png b/monster/dragon/wyvern.base.x71.png
similarity index 100%
rename from monster/dragon/wyvern.base.131.png
rename to monster/dragon/wyvern.base.x71.png
diff --git a/monster/dragon/wyvern.base.132.png b/monster/dragon/wyvern.base.x72.png
similarity index 100%
rename from monster/dragon/wyvern.base.132.png
rename to monster/dragon/wyvern.base.x72.png