diff --git a/clippy_lints/src/loops/mod.rs b/clippy_lints/src/loops/mod.rs
index 8e52cac4323c..610a0233eee1 100644
--- a/clippy_lints/src/loops/mod.rs
+++ b/clippy_lints/src/loops/mod.rs
@@ -61,7 +61,8 @@ declare_clippy_lint! {
     ///
     /// ### Why is this bad?
     /// Just iterating the collection itself makes the intent
-    /// more clear and is probably faster.
+    /// more clear and is probably faster because it eliminates
+    /// the bounds check that is done when indexing.
     ///
     /// ### Example
     /// ```rust
diff --git a/clippy_lints/src/loops/needless_range_loop.rs b/clippy_lints/src/loops/needless_range_loop.rs
index 3bca93d80aa7..1336b80d88d6 100644
--- a/clippy_lints/src/loops/needless_range_loop.rs
+++ b/clippy_lints/src/loops/needless_range_loop.rs
@@ -149,7 +149,7 @@ pub(super) fn check<'tcx>(
                         |diag| {
                             multispan_sugg(
                                 diag,
-                                "consider using an iterator",
+                                "consider using an iterator and enumerate",
                                 vec![
                                     (pat.span, format!("({}, <item>)", ident.name)),
                                     (
diff --git a/tests/ui/needless_range_loop.stderr b/tests/ui/needless_range_loop.stderr
index b31544ec334a..81b6f214bd11 100644
--- a/tests/ui/needless_range_loop.stderr
+++ b/tests/ui/needless_range_loop.stderr
@@ -49,7 +49,7 @@ error: the loop variable `i` is used to index `vec`
 LL |     for i in 0..vec.len() {
    |              ^^^^^^^^^^^^
    |
-help: consider using an iterator
+help: consider using an iterator and enumerate
    |
 LL |     for (i, <item>) in vec.iter().enumerate() {
    |         ~~~~~~~~~~~    ~~~~~~~~~~~~~~~~~~~~~~
@@ -126,7 +126,7 @@ error: the loop variable `i` is used to index `vec`
 LL |     for i in 5..vec.len() {
    |              ^^^^^^^^^^^^
    |
-help: consider using an iterator
+help: consider using an iterator and enumerate
    |
 LL |     for (i, <item>) in vec.iter().enumerate().skip(5) {
    |         ~~~~~~~~~~~    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -137,7 +137,7 @@ error: the loop variable `i` is used to index `vec`
 LL |     for i in 5..10 {
    |              ^^^^^
    |
-help: consider using an iterator
+help: consider using an iterator and enumerate
    |
 LL |     for (i, <item>) in vec.iter().enumerate().take(10).skip(5) {
    |         ~~~~~~~~~~~    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -148,7 +148,7 @@ error: the loop variable `i` is used to index `vec`
 LL |     for i in 0..vec.len() {
    |              ^^^^^^^^^^^^
    |
-help: consider using an iterator
+help: consider using an iterator and enumerate
    |
 LL |     for (i, <item>) in vec.iter_mut().enumerate() {
    |         ~~~~~~~~~~~    ~~~~~~~~~~~~~~~~~~~~~~~~~~