diff --git a/book_maker/cli.py b/book_maker/cli.py
index af1b6af4..bd4e4ab3 100644
--- a/book_maker/cli.py
+++ b/book_maker/cli.py
@@ -486,9 +486,10 @@ def main():
         e.batch_flag = options.batch_flag
     if options.batch_use_flag:
         e.batch_use_flag = options.batch_use_flag
-    if options.interval:
-        e.interval = options.interval
+
     if options.model == "gemini":
+        if options.interval:
+            e.translate_model.set_interval(options.interval)
         if options.model_list:
             e.translate_model.set_model_list(options.model_list.split(","))
         else:
diff --git a/book_maker/loader/epub_loader.py b/book_maker/loader/epub_loader.py
index 5f87c66f..c2b14376 100644
--- a/book_maker/loader/epub_loader.py
+++ b/book_maker/loader/epub_loader.py
@@ -35,7 +35,6 @@ def __init__(
         context_flag=False,
         temperature=1.0,
         context_paragraph_limit=0,
-        interval=0.01,
     ):
         self.epub_name = epub_name
         self.new_epub = epub.EpubBook()
@@ -46,7 +45,6 @@ def __init__(
             context_flag=context_flag,
             context_paragraph_limit=context_paragraph_limit,
             temperature=temperature,
-            interval=interval,
             **prompt_config_to_kwargs(prompt_config),
         )
         self.is_test = is_test
diff --git a/book_maker/translator/gemini_translator.py b/book_maker/translator/gemini_translator.py
index 34e02eb7..2ac63785 100644
--- a/book_maker/translator/gemini_translator.py
+++ b/book_maker/translator/gemini_translator.py
@@ -61,12 +61,10 @@ def __init__(
         prompt_sys_msg=None,
         context_flag=False,
         temperature=1.0,
-        interval=0.01,
         **kwargs,
     ) -> None:
         super().__init__(key, language)
         self.context_flag = context_flag
-        self.interval = interval
         self.prompt = (
             prompt_template
             or environ.get(PROMPT_ENV_MAP["user"])
@@ -161,6 +159,9 @@ def translate(self, text):
             t_text = str(num) + "\n" + t_text
         return t_text
 
+    def set_interval(self, interval):
+        self.interval = interval
+
     def set_geminipro_models(self):
         self.set_models(GEMINIPRO_MODEL_LIST)