diff --git a/doc/configuration.md b/doc/configuration.md
index 5ef7f818..41b0643d 100644
--- a/doc/configuration.md
+++ b/doc/configuration.md
@@ -1352,7 +1352,7 @@ Disable 'extranonce' stratum subscribe for pool.
 
 *Available*: Pool
 
-*Config File Syntax:* `"no-extranonce:true`
+*Config File Syntax:* `"no-extranonce":true`
 
 *Command Line Syntax:* `--no-extranonce` `--pool-no-extranonce`