diff --git a/blog2epub/common/downloader.py b/blog2epub/common/downloader.py
index 06108cb..e85365d 100644
--- a/blog2epub/common/downloader.py
+++ b/blog2epub/common/downloader.py
@@ -30,7 +30,7 @@ def __init__(
         dirs: DirModel,
         url: str,
         interface: EmptyInterface,
-        images_size: list[int],
+        images_size: tuple[int, int],
         images_quality: int,
         ignore_downloads: list[str],
     ):
diff --git a/blog2epub/models/configuration.py b/blog2epub/models/configuration.py
index 648c757..bbc2343 100644
--- a/blog2epub/models/configuration.py
+++ b/blog2epub/models/configuration.py
@@ -39,7 +39,7 @@ class ConfigurationModel(BaseModel):
     use_cache: bool = False
     destination_folder: str = str(Path.home())
     include_images: bool = True
-    images_size: tuple[int] = (600, 800)
+    images_size: tuple[int, int] = (600, 800)
     images_quality: int = 40
     images_bw: bool = True
     url: str = ""