diff --git a/Editor/EasySetupOutfit.cs b/Editor/EasySetupOutfit.cs
index 4898bb60..28fbe56c 100644
--- a/Editor/EasySetupOutfit.cs
+++ b/Editor/EasySetupOutfit.cs
@@ -308,10 +308,19 @@ namespace nadena.dev.modular_avatar.core.editor
                 // refusing to run if we detect multiple avatar descriptors above the current object (or if we're run on
                 // the avdesc object itself)
                 var nearestAvatarTransform = RuntimeUtil.FindAvatarTransformInParents(xform);
-                if (nearestAvatarTransform == null || nearestAvatarTransform == xform)
+                if (nearestAvatarTransform == null)
                 {
                     errorMessageGroups = new string[]
-                        { S_f("setup_outfit.err.multiple_avatar_descriptors", xform.gameObject.name) };
+                    {
+                        S_f("setup_outfit.err.no_avatar_descriptor", xform.gameObject.name)
+                    };
+                    return false;
+                }
+                
+                if (nearestAvatarTransform == xform)
+                {
+                    errorMessageGroups = new string[]
+                        { S_f("setup_outfit.err.run_on_avatar_itself", xform.gameObject.name) };
                     return false;
                 }
 
@@ -320,7 +329,7 @@ namespace nadena.dev.modular_avatar.core.editor
                 {
                     errorMessageGroups = new string[]
                     {
-                        S_f("setup_outfit.err.no_avatar_descriptor", xform.gameObject.name)
+                        S_f("setup_outfit.err.multiple_avatar_descriptors", xform.gameObject.name)
                     };
                     return false;
                 }
diff --git a/Editor/Localization/en-us.json b/Editor/Localization/en-us.json
index 9735b4bd..8154297f 100644
--- a/Editor/Localization/en-us.json
+++ b/Editor/Localization/en-us.json
@@ -259,7 +259,8 @@
   "setup_outfit.err.header": "Setup Outfit failed to process {0}",
   "setup_outfit.err.unknown": "Unknown error",
   "setup_outfit.err.no_selection": "No object selected.",
-  "setup_outfit.err.multiple_avatar_descriptors": "Multiple avatar descriptors found in {0} and its parents.",
+  "setup_outfit.err.run_on_avatar_itself": "Setup outfit needs to be run on the outfit object, not on the avatar itself.\n\nAre you trying to make a hybrid avatar? If so, remove the avatar descriptor from the inner avatar, and run setup outfit on that.",
+  "setup_outfit.err.multiple_avatar_descriptors": "Multiple avatar descriptors found in {0} and its parents.\n\nAre you trying to make a hybrid avatar? If so, remove the avatar descriptor from the inner avatar, and run setup outfit on that.",
   "setup_outfit.err.no_avatar_descriptor": "No avatar descriptor found in {0}'s parents. Make sure your outfit is placed inside your avatar.",
   "setup_outfit.err.no_animator": "Your avatar does not have an Animator component.",
   "setup_outfit.err.no_hips": "Your avatar does not have a Hips bone. Setup Outfit only works on humanoid avatars.",
diff --git a/Editor/Localization/ja-jp.json b/Editor/Localization/ja-jp.json
index 0134b7b8..c5e2c695 100644
--- a/Editor/Localization/ja-jp.json
+++ b/Editor/Localization/ja-jp.json
@@ -213,7 +213,8 @@
   "setup_outfit.err.header": "Setup outfit が「{0}」を処理中に失敗しました。",
   "setup_outfit.err.unknown": "原因不明のエラーが発生しました。",
   "setup_outfit.err.no_selection": "オブジェクトが選択されていません。",
-  "setup_outfit.err.multiple_avatar_descriptors": "「{0}」とその親に、複数のavatar descriptorを発見しました。",
+  "setup_outfit.err.run_on_avatar_itself": "Setup Outfitはアバター自体ではなく、衣装のほうで実行してください。\n\nキメラアバターを作る場合は、中のほうのAvatar Descriptorを消して、衣装として扱ってください。",
+  "setup_outfit.err.multiple_avatar_descriptors": "「{0}」とその親に、複数のavatar descriptorを発見しました。\n\nキメラアバターを作る場合は、中のほうのAvatar Descriptorを消して、衣装として扱ってください。",
   "setup_outfit.err.no_avatar_descriptor": "「{0}」の親に、avatar descriptorが見つかりませんでした。衣装のオブジェクトをアバターの中に配置してください。",
   "setup_outfit.err.no_animator": "アバターにAnimatorコンポーネントがありません。",
   "setup_outfit.err.no_hips": "アバターにHipsボーンがありません。なお、Setup Outfitはヒューマノイドアバター以外には対応していません。",