diff --git a/doc/api/errors.md b/doc/api/errors.md
index 39d131b42aab55..19b4908b3b9ef4 100644
--- a/doc/api/errors.md
+++ b/doc/api/errors.md
@@ -1690,7 +1690,7 @@ An attempt has been made to create a string longer than the maximum allowed
 length.
 
 <a id="ERR_SYNTHETIC"></a>
-#### ERR_SYNTHETIC
+### ERR_SYNTHETIC
 
 An artificial error object used to capture call stack when diagnostic report
 is produced.