diff --git a/Docs/Tags_format.md b/Docs/Tags_format.md
index bf5587959..83ff0c392 100644
--- a/Docs/Tags_format.md
+++ b/Docs/Tags_format.md
@@ -80,7 +80,7 @@ which we do not want.
 
 To mitigate this, use:
 
-```
+```json
 "mappings": [
 {
     "if":"key:={some_other_key}"
@@ -91,4 +91,4 @@ To mitigate this, use:
 ```
 
 One can use `key!:=prefix-{other_key}-postfix` as well, to match if `key` is _not_ the same
-as `prefix-{other_key}-postfix` (with other_key substituted by the value)
\ No newline at end of file
+as `prefix-{other_key}-postfix` (with `other_key` substituted by the value)