diff --git a/learnware/learnware/base.py b/learnware/learnware/base.py
index a478a73..9592c19 100644
--- a/learnware/learnware/base.py
+++ b/learnware/learnware/base.py
@@ -67,7 +67,7 @@ class Learnware:
         return self.specification
 
     def update_stat_spec(self, name, new_stat_spec: BaseStatSpecification):
-        self.specification.update_stat_spec(name, new_stat_spec)
+        self.specification.update_stat_spec(**{name: new_stat_spec})
 
     def update_semantic_spec(self, new_semantic_spec: dict):
         self.specification.update_semantic_spec(new_semantic_spec)
diff --git a/learnware/reuse/base.py b/learnware/reuse/base.py
index 2be29ca..9cb71cd 100644
--- a/learnware/reuse/base.py
+++ b/learnware/reuse/base.py
@@ -31,7 +31,7 @@ class BaseReuser:
         Parameters
         ----------
         user_data : np.ndarray
-            User's labeled raw data.
+            User's unlabeled raw data.
 
         Returns
         -------
diff --git a/learnware/reuse/job_selector.py b/learnware/reuse/job_selector.py
index 9de299b..6c37c8a 100644
--- a/learnware/reuse/job_selector.py
+++ b/learnware/reuse/job_selector.py
@@ -38,7 +38,7 @@ class JobSelectorReuser(BaseReuser):
         Parameters
         ----------
         user_data : np.ndarray
-            User's labeled raw data.
+            User's unlabeled raw data.
 
         Returns
         -------
@@ -84,7 +84,7 @@ class JobSelectorReuser(BaseReuser):
         Parameters
         ----------
         user_data : np.ndarray
-            User's labeled raw data.
+            User's raw data.
         """
         if len(self.learnware_list) == 1:
             # user_data_num = user_data.shape[0]