diff --git a/src/main/scala/stdlib/HigherOrderFunctions.scala b/src/main/scala/stdlib/HigherOrderFunctions.scala
index c3a83cfd..7283a1f4 100644
--- a/src/main/scala/stdlib/HigherOrderFunctions.scala
+++ b/src/main/scala/stdlib/HigherOrderFunctions.scala
@@ -143,7 +143,8 @@ object HigherOrderFunctions
 
   /** Function taking another function as a parameter. Helps in composing functions.
    *
-   * Hint: a map method applies the function to each element of a list.
+   * Hint 1: a map method applies the function to each element of a list.
+   * Hint 2: if you assume your solution has syntax issues, consider applying functions to lists using the Scala command line.
    */
   def functionAsParameterHigherOrderFunctions(
       res0: List[String],