diff --git a/api-ref/source/v1/index.rst b/api-ref/source/v1/index.rst
index e74d703..40b4de3 100644
--- a/api-ref/source/v1/index.rst
+++ b/api-ref/source/v1/index.rst
@@ -12,4 +12,7 @@ OpenStack Log API V1 (CURRENT)
 .. custom config document.
 .. include:: custom-config.inc
 
+.. search log document.
+.. include:: search-params.inc
+
 
diff --git a/api-ref/source/v1/parameters.yaml b/api-ref/source/v1/parameters.yaml
index 9dd01a2..e57c43d 100644
--- a/api-ref/source/v1/parameters.yaml
+++ b/api-ref/source/v1/parameters.yaml
@@ -3,11 +3,11 @@
 # variables in path
 
 # variables in query
-param_type:
+index_type:
   description: |
-    the type of parameter, such as host_name, level, program_name, module_name
+    the type of elasticsearch index, flog:Openstack log, slog:the host OS log
   in: query
-  required: true
+  required: false
   type: string
 module_name:
   description: |
@@ -15,9 +15,9 @@ module_name:
   in: query
   required: false
   type: string
-index_type:
+param_type:
   description: |
-    the type of elasticsearch index, flog:Openstack log, slog:the host OS log
+    the type of parameter, such as host_name, level, program_name, module_name
   in: query
-  required: false
+  required: true
   type: string
diff --git a/api-ref/source/v1/search-params.inc b/api-ref/source/v1/search-params.inc
index 01b3d0f..1e6f48d 100644
--- a/api-ref/source/v1/search-params.inc
+++ b/api-ref/source/v1/search-params.inc
@@ -36,5 +36,5 @@ Response
 **Example: JSON request**
 
 
-.. literalinclude:: ./samples/search-log/search-params-show-response.json.json
+.. literalinclude:: ./samples/search-log/search-params-show-response.json
    :language: javascript