diff --git a/core-concepts/did-ddo.md b/core-concepts/did-ddo.md
index c20d1cf8..5fe3dd0f 100644
--- a/core-concepts/did-ddo.md
+++ b/core-concepts/did-ddo.md
@@ -256,7 +256,7 @@ Use GraphQL querys as datasource.
 
 ```
 {
-  "type": "graphql",    
+  "type": "graphql",
 	"url": "http://172.15.0.15:8000/subgraphs/name/oceanprotocol/ocean-subgraph",
   "query": """
     	query{