diff --git a/doc/api/README.md b/doc/api/README.md
index 2b6466a9e57a728bdc7beb439014b44fa353e783..a9bfd2f7ebc07a6bae738716bd5ca6ff3b3f3680 100644
--- a/doc/api/README.md
+++ b/doc/api/README.md
@@ -268,7 +268,7 @@ Such errors appear in two cases:
 
 When an attribute is missing, you will get something like:
 
-```json
+```
 HTTP/1.1 400 Bad Request
 Content-Type: application/json
 {
@@ -279,7 +279,7 @@ Content-Type: application/json
 When a validation error occurs, error messages will be different. They will
 hold all details of validation errors:
 
-```json
+```
 HTTP/1.1 400 Bad Request
 Content-Type: application/json
 {