diff --git a/lang/best-practice/unused-function-parameter.jl b/lang/best-practice/unused-function-parameter.jl
index 6e143ef..dfe82a9 100644
--- a/lang/best-practice/unused-function-parameter.jl
+++ b/lang/best-practice/unused-function-parameter.jl
@@ -10,9 +10,9 @@ function foo(x)
     y
   end
   
-  #ok: unused-function-parameter
+  #todook: unused-function-parameter
   function foo(x)
-    x = 3
+    x = 3 # TODO: Mutating parameters should count as using them
   end
   
   #ok: unused-function-parameter
@@ -25,4 +25,4 @@ function foo(x)
     y = x
     return y
   end
-  
\ No newline at end of file
+