diff --git a/smnp.lang.debug.md b/smnp.lang.debug.md
index 5911da3..3a04043 100644
--- a/smnp.lang.debug.md
+++ b/smnp.lang.debug.md
@@ -1,6 +1,6 @@
 # Functions
 ## stacktrace
-```
+```php
 stacktrace(printScopes: bool)
 ```
 Prints current stack trace. Also, prints scopes with variables if `printScopes` is set to `true`.
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