diff --git a/tutorials/graphql/intro-graphql/tutorial-site/content/core-concepts.md b/tutorials/graphql/intro-graphql/tutorial-site/content/core-concepts.md
index 2d68bd7be..da83a2941 100644
--- a/tutorials/graphql/intro-graphql/tutorial-site/content/core-concepts.md
+++ b/tutorials/graphql/intro-graphql/tutorial-site/content/core-concepts.md
@@ -123,7 +123,7 @@ The variable(s) is defined at the top of the operation and the value for the var
 
 ```
 {
-  limit: 5
+  "limit": 5
 }
 ```
 
@@ -226,4 +226,4 @@ In the above query, we include the field fullname, only if the condition is true
 
 You can also use custom directives to handle other use cases.
 
-In your GraphQL adventures, you’re sure to run into these core concepts. Now you’re equipped to work with them!
\ No newline at end of file
+In your GraphQL adventures, you’re sure to run into these core concepts. Now you’re equipped to work with them!