diff --git a/exercises/generics/generics1.rs b/exercises/generics/generics1.rs
index 967287e..f93e64a 100644
--- a/exercises/generics/generics1.rs
+++ b/exercises/generics/generics1.rs
@@ -1,6 +1,8 @@
 // This shopping list program isn't compiling!
 // Use your knowledge of generics to fix it.
 
+// Execute `rustlings hint generics1` for hints!
+
 // I AM NOT DONE
 
 fn main() {
diff --git a/exercises/generics/generics2.rs b/exercises/generics/generics2.rs
index 0cb59ad..1501529 100644
--- a/exercises/generics/generics2.rs
+++ b/exercises/generics/generics2.rs
@@ -1,6 +1,8 @@
 // This powerful wrapper provides the ability to store a positive integer value.
 // Rewrite it using generics so that it supports wrapping ANY type.
 
+// Execute `rustlings hint generics2` for hints!
+
 // I AM NOT DONE
 
 struct Wrapper {
diff --git a/exercises/standard_library_types/iterators1.rs b/exercises/standard_library_types/iterators1.rs
index 3fd519d..4606ad3 100644
--- a/exercises/standard_library_types/iterators1.rs
+++ b/exercises/standard_library_types/iterators1.rs
@@ -1,11 +1,11 @@
 // iterators1.rs
-// 
+//
 //  Make me compile by filling in the `???`s
 //
 // When performing operations on elements within a collection, iterators are essential.
-// This module helps you get familiar with the structure of using an iterator and 
+// This module helps you get familiar with the structure of using an iterator and
 // how to go through elements within an iterable collection.
-// 
+//
 // Execute `rustlings hint iterators1` for hints :D
 
 // I AM NOT DONE
diff --git a/exercises/structs/structs3.rs b/exercises/structs/structs3.rs
index 8d8b471..a80d062 100644
--- a/exercises/structs/structs3.rs
+++ b/exercises/structs/structs3.rs
@@ -31,7 +31,7 @@ impl Package {
     }
 
     fn get_fees(&self, cents_per_gram: i32) -> ??? {
-        // Something goes here... 
+        // Something goes here...
     }
 }