diff --git a/src/guidelines/docs/M-CANONICAL-DOCS.md b/src/guidelines/docs/M-CANONICAL-DOCS.md
index daad593..b6017ca 100644
--- a/src/guidelines/docs/M-CANONICAL-DOCS.md
+++ b/src/guidelines/docs/M-CANONICAL-DOCS.md
@@ -46,7 +46,7 @@ but instead:
 
 ```rust,ignore
 /// Copies a file from `src` to `dst`.
-fn copy(from: File, to: File) {}
+fn copy(src: File, dst: File) {}
 ```
 
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