diff --git a/.changeset/thick-teeth-crash.md b/.changeset/thick-teeth-crash.md
new file mode 100644
index 0000000000..f50b67d455
--- /dev/null
+++ b/.changeset/thick-teeth-crash.md
@@ -0,0 +1,6 @@
+---
+"gradio": patch
+"gradio_client": patch
+---
+
+fix:Fix: `file_types` checking bug
diff --git a/client/python/gradio_client/utils.py b/client/python/gradio_client/utils.py
index e49648afe7..10fe5ffe48 100644
--- a/client/python/gradio_client/utils.py
+++ b/client/python/gradio_client/utils.py
@@ -689,17 +689,15 @@ def get_extension(encoding: str) -> str | None:
 
 def is_valid_file(file_path: str, file_types: list[str]) -> bool:
     mime_type = get_mimetype(file_path)
-    if mime_type is None:
-        return False
     for file_type in file_types:
         if file_type == "file":
             return True
         if file_type.startswith("."):
             file_type = file_type.lstrip(".").lower()
-            mime_type_split = mime_type.lower().split("/")
-            if file_type == mime_type_split[1]:
+            file_ext = Path(file_path).suffix.lstrip(".").lower()
+            if file_type == file_ext:
                 return True
-        elif mime_type.startswith(f"{file_type}/"):
+        elif mime_type is not None and mime_type.startswith(f"{file_type}/"):
             return True
     return False