diff --git a/plugins/catalog-backend-module-backstage-openapi/README.md b/plugins/catalog-backend-module-backstage-openapi/README.md
index 15e14af128..382801d532 100644
--- a/plugins/catalog-backend-module-backstage-openapi/README.md
+++ b/plugins/catalog-backend-module-backstage-openapi/README.md
@@ -28,7 +28,7 @@ catalog:
         - catalog
         - events
         - search
-      definitionFormat: 'yaml"' # Optional, defaults to 'json'
+      definitionFormat: 'yaml' # Optional, defaults to 'json'
       entityOverrides: # All optional
         metadata:
           name: 'my-name'