diff --git a/packages/e2e-test-utils/src/shared/get-json-response.js b/packages/e2e-test-utils/src/shared/get-json-response.js
index 4d8581129de79..c09d6f3a18662 100644
--- a/packages/e2e-test-utils/src/shared/get-json-response.js
+++ b/packages/e2e-test-utils/src/shared/get-json-response.js
@@ -6,7 +6,7 @@
  */
 export function getJSONResponse( obj ) {
 	return {
-		content: 'application/json',
+		contentType: 'application/json',
 		body: JSON.stringify( obj ),
 	};
 }