diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f6c78e0d62..2d953f2406 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -54,6 +54,10 @@ jobs:
           grep -Fxq 'data/middle-earth/loot_table/blocks/skeletal_pile_layer.json' "$RUNNER_TEMP/middle-earth-player-jar-entries.txt"
           grep -Fxq 'data/middle-earth/loot_table/blocks/waste_pile_layer.json' "$RUNNER_TEMP/middle-earth-player-jar-entries.txt"
           grep -Fxq 'assets/middle-earth/models/item/gondorian_sword.json' "$RUNNER_TEMP/middle-earth-player-jar-entries.txt"
+          for armor in gondorian_horse_armor rohirric_horse_armor dalish_horse_armor lorien_horse_armor; do
+            grep -Fxq "assets/middle-earth/textures/entity/horse/armor/horse_armor_${armor}.png" "$RUNNER_TEMP/middle-earth-player-jar-entries.txt"
+            ! grep -Fxq "assets/middle-earth/textures/entity/equipment/horse_body/${armor}.png" "$RUNNER_TEMP/middle-earth-player-jar-entries.txt"
+          done
           wild_things_entry=$(grep -E '^META-INF/jarjar/.+Of-Beasts-and-Wild-Things.+\.jar$' "$RUNNER_TEMP/middle-earth-player-jar-entries.txt")
           unzip -p "${player_jars[0]}" "$wild_things_entry" > "$RUNNER_TEMP/wild-things.jar"
           jar tf "$RUNNER_TEMP/wild-things.jar" > "$RUNNER_TEMP/wild-things-entries.txt"
diff --git a/middle-earth/src/main/resources/assets/middle-earth/textures/entity/equipment/horse_body/dalish_horse_armor.png b/middle-earth/src/main/resources/assets/middle-earth/textures/entity/horse/armor/horse_armor_dalish_horse_armor.png
similarity index 100%
rename from middle-earth/src/main/resources/assets/middle-earth/textures/entity/equipment/horse_body/dalish_horse_armor.png
rename to middle-earth/src/main/resources/assets/middle-earth/textures/entity/horse/armor/horse_armor_dalish_horse_armor.png
diff --git a/middle-earth/src/main/resources/assets/middle-earth/textures/entity/equipment/horse_body/gondorian_horse_armor.png b/middle-earth/src/main/resources/assets/middle-earth/textures/entity/horse/armor/horse_armor_gondorian_horse_armor.png
similarity index 100%
rename from middle-earth/src/main/resources/assets/middle-earth/textures/entity/equipment/horse_body/gondorian_horse_armor.png
rename to middle-earth/src/main/resources/assets/middle-earth/textures/entity/horse/armor/horse_armor_gondorian_horse_armor.png
diff --git a/middle-earth/src/main/resources/assets/middle-earth/textures/entity/equipment/horse_body/lorien_horse_armor.png b/middle-earth/src/main/resources/assets/middle-earth/textures/entity/horse/armor/horse_armor_lorien_horse_armor.png
similarity index 100%
rename from middle-earth/src/main/resources/assets/middle-earth/textures/entity/equipment/horse_body/lorien_horse_armor.png
rename to middle-earth/src/main/resources/assets/middle-earth/textures/entity/horse/armor/horse_armor_lorien_horse_armor.png
diff --git a/middle-earth/src/main/resources/assets/middle-earth/textures/entity/equipment/horse_body/rohirric_horse_armor.png b/middle-earth/src/main/resources/assets/middle-earth/textures/entity/horse/armor/horse_armor_rohirric_horse_armor.png
similarity index 100%
rename from middle-earth/src/main/resources/assets/middle-earth/textures/entity/equipment/horse_body/rohirric_horse_armor.png
rename to middle-earth/src/main/resources/assets/middle-earth/textures/entity/horse/armor/horse_armor_rohirric_horse_armor.png
diff --git a/middle-earth/src/test/java/net/sevenstars/middleearth/ItemRenderingContractTest.java b/middle-earth/src/test/java/net/sevenstars/middleearth/ItemRenderingContractTest.java
index 93e6c2a7ce..275276d384 100644
--- a/middle-earth/src/test/java/net/sevenstars/middleearth/ItemRenderingContractTest.java
+++ b/middle-earth/src/test/java/net/sevenstars/middleearth/ItemRenderingContractTest.java
@@ -206,6 +206,38 @@ void itemTintsMatchTheUpstreamDefinitions() throws IOException {
         assertTrue(colors.contains("ResourceItemsME.COLORED_BUNDLES"));
     }
 
+    @Test
+    void horseArmorTexturesUseTheMinecraft1211PathContract() throws IOException {
+        String equipment = source("net/sevenstars/middleearth/item/EquipmentItemsME.java");
+        String materials = source(
+                "net/sevenstars/middleearth/item/utils/armor/ArmorMaterialsME.java"
+        );
+
+        for (String armor : new String[]{
+                "gondorian_horse_armor",
+                "rohirric_horse_armor",
+                "dalish_horse_armor",
+                "lorien_horse_armor"
+        }) {
+            assertTrue(materials.contains("registerArmor(\"" + armor + "\""), armor);
+            assertTrue(equipment.contains("registerGeneratedItem(\"" + armor + "\""), armor);
+            assertTrue(
+                    Files.isRegularFile(MAIN_RESOURCE_TEXTURES.resolve(
+                            "entity/horse/armor/horse_armor_" + armor + ".png"
+                    )),
+                    "Missing Minecraft 1.21.1 horse armor texture for " + armor
+            );
+            assertFalse(
+                    Files.exists(MAIN_RESOURCE_TEXTURES.resolve(
+                            "entity/equipment/horse_body/" + armor + ".png"
+                    )),
+                    "Minecraft 1.21.8 horse armor path leaked into the 1.21.1 port for " + armor
+            );
+        }
+
+        assertTrue(equipment.contains("AnimalArmorItem.BodyType.EQUESTRIAN"));
+    }
+
     @Test
     void forgedComponentsKeepEveryMaterialModelAndHotState() throws IOException {
         String provider = source(
diff --git a/middle-earth/src/test/java/net/sevenstars/middleearth/PackagedDataDeterminismContractTest.java b/middle-earth/src/test/java/net/sevenstars/middleearth/PackagedDataDeterminismContractTest.java
index e9063bc25a..0f47b26589 100644
--- a/middle-earth/src/test/java/net/sevenstars/middleearth/PackagedDataDeterminismContractTest.java
+++ b/middle-earth/src/test/java/net/sevenstars/middleearth/PackagedDataDeterminismContractTest.java
@@ -16,6 +16,8 @@
 import java.util.zip.ZipFile;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 class PackagedDataDeterminismContractTest {
@@ -57,6 +59,25 @@ void factionNpcRanksUseCanonicalSerializationOrder() throws IOException {
         assertTrue(checkedFactions > 0, "Expected packaged faction NPC pools");
     }
 
+    @Test
+    void packagedHorseArmorTexturesUseTheMinecraft1211Paths() throws IOException {
+        try (ZipFile playerJar = new ZipFile(playerJar().toFile())) {
+            for (String armor : List.of(
+                    "gondorian_horse_armor",
+                    "rohirric_horse_armor",
+                    "dalish_horse_armor",
+                    "lorien_horse_armor"
+            )) {
+                String expected = "assets/middle-earth/textures/entity/horse/armor/horse_armor_"
+                        + armor + ".png";
+                String incompatible = "assets/middle-earth/textures/entity/equipment/horse_body/"
+                        + armor + ".png";
+                assertNotNull(playerJar.getEntry(expected), "Missing " + expected);
+                assertNull(playerJar.getEntry(incompatible), "Found incompatible " + incompatible);
+            }
+        }
+    }
+
     private static JsonObject readJson(ZipFile playerJar, ZipEntry entry) throws IOException {
         try (InputStreamReader reader = new InputStreamReader(
                 playerJar.getInputStream(entry), StandardCharsets.UTF_8