diff --git a/data/mods/Limb_WIP/armor/test_armor.json b/data/mods/Limb_WIP/armor/test_armor.json
index 80026caa2818a..2bdea473e7998 100644
--- a/data/mods/Limb_WIP/armor/test_armor.json
+++ b/data/mods/Limb_WIP/armor/test_armor.json
@@ -3,7 +3,7 @@
     "id": "debug_belt_tail",
     "repairs_like": "scarf",
     "type": "ARMOR",
-    "name": { "str": "debug tail belt", "str_pl": "debug tail belts" },
+    "name": { "str": "debug tail belt" },
     "description": "This is a template for judo belts.  If found in a game, it is a bug.",
     "weight": "200 g",
     "volume": "250 ml",
@@ -20,7 +20,14 @@
     "id": "debug_belt_tail_weighted",
     "type": "ARMOR",
     "copy-from": "debug_belt_tail",
-    "name": { "str": "weighted debug tail belt", "str_pl": "weighted debug tail belts" },
-    "armor": [ { "encumbrance": 120, "coverage": 50, "covers": [ "debug_tail" ], "specifically_covers": [ "sub_limb_debug_tail" ] } ]
+    "name": { "str": "weighted debug tail belt" },
+    "armor": [
+      {
+        "encumbrance": 120,
+        "coverage": 50,
+        "covers": [ "torso", "debug_tail" ],
+        "specifically_covers": [ "sub_limb_debug_tail" ]
+      }
+    ]
   }
 ]
diff --git a/data/mods/Magiclysm/mutations/mutations.json b/data/mods/Magiclysm/mutations/mutations.json
index 5fba6a1aae674..7b264720d825c 100644
--- a/data/mods/Magiclysm/mutations/mutations.json
+++ b/data/mods/Magiclysm/mutations/mutations.json
@@ -463,12 +463,6 @@
     "copy-from": "WINGS_STUB",
     "extend": { "category": [ "DRAGON_BLACK", "SPECIES_RAVENFOLK" ], "changes_to": [ "DRAGON_WINGS_BLACK" ] }
   },
-  {
-    "type": "mutation",
-    "id": "ARM_FEATHERS",
-    "copy-from": "ARM_FEATHERS",
-    "extend": { "category": [ "SPECIES_RAVENFOLK" ] }
-  },
   {
     "type": "mutation",
     "id": "DRAGON_WINGS_BLACK",