diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/direct_codex_user_item/validation.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/direct_codex_user_item/validation.rs
index facd45bc8..e8b0d5586 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/direct_codex_user_item/validation.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/direct_codex_user_item/validation.rs
@@ -39,7 +39,7 @@ pub(crate) fn validate_direct_codex_user_item(
             DirectCodexUserContentPart::AgcSkillReference { name } => {
                 let name = name.trim();
                 if name.is_empty()
-                    || name.len() > 120
+                    || name.chars().count() > 120
                     || name.chars().any(|character| {
                         character.is_control()
                             || character.is_whitespace()