diff --git a/src/main/resources/openApi.yaml b/src/main/resources/openApi.yaml
index da637b2..e3de9c4 100644
--- a/src/main/resources/openApi.yaml
+++ b/src/main/resources/openApi.yaml
@@ -283,14 +283,7 @@ paths:
                 $ref: '#/components/schemas/ConstitutionResponse'
   /comments/{comment}:
     parameters:
-      - name: comment
-        in: path
-        description: The ID of comment
-        example: 701dc504-db49-7e3a-2c0a-32542507ea57
-        required: true
-        schema:
-          type: string
-          format: uuid
+      - $ref: '#/components/parameters/comment'
     get:
       summary: Get Comment by Comment ID
       tags:
@@ -323,14 +316,7 @@ paths:
 
   /comments/{comment}/children:
     parameters:
-      - name: comment
-        in: path
-        description: The ID of comment
-        example: 701dc504-db49-7e3a-2c0a-32542507ea57
-        required: true
-        schema:
-          type: string
-          format: uuid
+      - $ref: '#/components/parameters/comment'
     get:
       summary: Get Comment children by Comment ID
       tags:
@@ -599,6 +585,16 @@ components:
         type: string
         format: uuid
 
+    comment:
+      name: comment
+      in: path
+      description: The ID of comment
+      example: 701dc504-db49-7e3a-2c0a-32542507ea57
+      required: true
+      schema:
+        type: string
+        format: uuid
+
   securitySchemes:
     JWTAuth:
       type: http