diff --git a/monster/dragon/Cwyvern.base.171.png b/monster/dragon/Cwyvern.base.x71.png
similarity index 100%
rename from monster/dragon/Cwyvern.base.171.png
rename to monster/dragon/Cwyvern.base.x71.png
diff --git a/monster/dragon/Cwyvern.base.172.png b/monster/dragon/Cwyvern.base.x72.png
similarity index 100%
rename from monster/dragon/Cwyvern.base.172.png
rename to monster/dragon/Cwyvern.base.x72.png