diff --git a/api/apps/kb_app.py b/api/apps/kb_app.py
index 520da91e3..d65766b83 100644
--- a/api/apps/kb_app.py
+++ b/api/apps/kb_app.py
@@ -45,9 +45,9 @@ def create():
     dataset_name = req["name"]
     if not isinstance(dataset_name, str):
         return get_data_error_result(message="Dataset name must be string.")
-    if dataset_name == "":
+    if dataset_name.strip() == "":
         return get_data_error_result(message="Dataset name can't be empty.")
-    if len(dataset_name.encode("utf-8")) >= DATASET_NAME_LIMIT:
+    if len(dataset_name.encode("utf-8")) > DATASET_NAME_LIMIT:
         return get_data_error_result(
             message=f"Dataset name length is {len(dataset_name)} which is large than {DATASET_NAME_LIMIT}")