diff --git a/aiaccel/hpo/apps/optimize.py b/aiaccel/hpo/apps/optimize.py
index 61c834da..0eca09bc 100644
--- a/aiaccel/hpo/apps/optimize.py
+++ b/aiaccel/hpo/apps/optimize.py
@@ -94,10 +94,9 @@ def main() -> None:
         executor:
             _target_: aiaccel.hpo.job_executors.LocalJobExecutor
             n_max_jobs: 4
-
-        result:
-            _target_: aiaccel.hpo.job_output_loaders.JsonJobOutputLoader
-            filename_template: "{job.cwd}/{job.job_name}_result.json"
+            loader:
+                _target_: aiaccel.hpo.job_output_loaders.JsonJobOutputLoader
+                filename_template: "{job.cwd}/{job.job_name}_result.json"
 
         params:
             _convert_: partial
diff --git a/aiaccel/hpo/job_output_loaders/json_loader.py b/aiaccel/hpo/job_output_loaders/json_loader.py
index 72928d9c..e92cb37c 100644
--- a/aiaccel/hpo/job_output_loaders/json_loader.py
+++ b/aiaccel/hpo/job_output_loaders/json_loader.py
@@ -14,7 +14,7 @@ class JsonJobOutputLoader(BaseJobOutputLoader):
         __init__(filename_template: str) -> None:
             Initializes the JsonJobOutputLoader with a filename template.
 
-        load(job: BaseJobExecutor) -> int | float | str:
+        load(job: BaseJob) -> int | float | str:
             Loads the result from a JSON file based on the job information.
     """
 
diff --git a/aiaccel/hpo/job_output_loaders/pickle_loader.py b/aiaccel/hpo/job_output_loaders/pickle_loader.py
index 0ace21b2..01c11a9f 100644
--- a/aiaccel/hpo/job_output_loaders/pickle_loader.py
+++ b/aiaccel/hpo/job_output_loaders/pickle_loader.py
@@ -14,7 +14,7 @@ class PickleJobOutputLoader(BaseJobOutputLoader):
         __init__(filename_template: str) -> None:
             Initializes the PickleJobOutputLoader with a filename template.
 
-        load(job: BaseJobExecutor) -> int | float | str:
+        load(job: BaseJob) -> int | float | str:
             Loads the result from a pickle file corresponding to the given job.
     """
 
diff --git a/aiaccel/hpo/job_output_loaders/stdout_loader.py b/aiaccel/hpo/job_output_loaders/stdout_loader.py
index daca9ba8..dd6bad5a 100644
--- a/aiaccel/hpo/job_output_loaders/stdout_loader.py
+++ b/aiaccel/hpo/job_output_loaders/stdout_loader.py
@@ -11,7 +11,7 @@ class StdoutJobOutputLoader(BaseJobOutputLoader):
         filename_template (str): A template for the filename where the results are stored.
 
     Methods:
-        load(job: BaseJobExecutor) -> int | float | str:
+        load(job: BaseJob) -> int | float | str:
             Loads the result from the file corresponding to the given job.
             The result is expected to be on the last non-empty line of the file.
             Returns the result as an integer, float, or string, depending on the content.
diff --git a/docs/source/user_guide/hpo.rst b/docs/source/user_guide/hpo.rst
index cab96eeb..54a9f666 100644
--- a/docs/source/user_guide/hpo.rst
+++ b/docs/source/user_guide/hpo.rst
@@ -72,10 +72,9 @@ Basic configuration example:
     executor:
       _target_: aiaccel.hpo.job_executors.LocalJobExecutor
       n_max_jobs: 4
-
-    result:
-      _target_: aiaccel.hpo.job_output_loaders.JsonResult
-      filename_template: "{job.cwd}/{job.job_name}_result.json"
+      loader:
+        _target_: aiaccel.hpo.job_output_loaders.JsonResult
+        filename_template: "{job.cwd}/{job.job_name}_result.json"
 
     params:
       x1: [0, 1]
@@ -124,9 +123,11 @@ JSON Format (Default):
 
 .. code-block:: yaml
 
-    result:
-      _target_: aiaccel.hpo.job_output_loaders.JsonResult
-      filename_template: "{job.cwd}/{job.job_name}_result.json"
+    executor:
+      ...
+      loader:
+        _target_: aiaccel.hpo.job_output_loaders.JsonResult
+        filename_template: "{job.cwd}/{job.job_name}_result.json"
 
 Example objective function for JSON:
 
@@ -147,9 +148,11 @@ Pickle Format:
 
 .. code-block:: yaml
 
-    result:
-      _target_: aiaccel.hpo.job_output_loaders.PickleResult
-      filename_template: "{job.cwd}/{job.job_name}_result.pkl"
+    executor:
+      ...
+      loader:
+        _target_: aiaccel.hpo.job_output_loaders.PickleResult
+        filename_template: "{job.cwd}/{job.job_name}_result.pkl"
 
 Example objective function for Pickle:
 
@@ -170,9 +173,11 @@ Stdout Format:
 
 .. code-block:: yaml
 
-    result:
-      _target_: aiaccel.hpo.job_output_loaders.StdoutResult
-      filename_template: "{job.cwd}/{job.job_name}_result.txt"
+    executor:
+      ...
+      loader:
+        _target_: aiaccel.hpo.job_output_loaders.StdoutResult
+        filename_template: "{job.cwd}/{job.job_name}_result.txt"
 
 Example objective function for Stdout: