diff --git a/services/text-converter.ts b/services/text-converter.ts
index 4858d5e..ac2652c 100644
--- a/services/text-converter.ts
+++ b/services/text-converter.ts
@@ -82,8 +82,10 @@ async function convertEnglishWordToKatakana(word: string): Promise<string> {
     // Fallback if wanakana fails
   }
 
-  // Fallback: simple phonetic approximation
-  return approximateEnglishToKatakana(word);
+  console.warn(
+    `No conversion found for "${word}", using phonetic approximation.`,
+  );
+  return word;
 }
 
 /**