diff --git a/helix-core/src/test.rs b/helix-core/src/test.rs
index 7183302c6..71c71cce2 100644
--- a/helix-core/src/test.rs
+++ b/helix-core/src/test.rs
@@ -65,7 +65,7 @@ pub fn print(s: &str) -> (String, Selection) {
         let head_at_beg = iter.next_if_eq(&"|").is_some();
         let last_grapheme = |s: &str| {
             UnicodeSegmentation::graphemes(s, true)
-                .last()
+                .next_back()
                 .map(String::from)
         };
 
diff --git a/helix-lsp/src/client.rs b/helix-lsp/src/client.rs
index f2b78a118..f82751051 100644
--- a/helix-lsp/src/client.rs
+++ b/helix-lsp/src/client.rs
@@ -39,7 +39,7 @@ fn workspace_for_uri(uri: lsp::Url) -> WorkspaceFolder {
     lsp::WorkspaceFolder {
         name: uri
             .path_segments()
-            .and_then(|segments| segments.last())
+            .and_then(|mut segments| segments.next_back())
             .map(|basename| basename.to_string())
             .unwrap_or_default(),
         uri,
diff --git a/helix-view/src/register.rs b/helix-view/src/register.rs
index d286a85cc..b2bb53ac2 100644
--- a/helix-view/src/register.rs
+++ b/helix-view/src/register.rs
@@ -145,7 +145,8 @@ impl Registers {
     }
 
     pub fn last<'a>(&'a self, name: char, editor: &'a Editor) -> Option<Cow<'a, str>> {
-        self.read(name, editor).and_then(|values| values.last())
+        self.read(name, editor)
+            .and_then(|mut values| values.next_back())
     }
 
     pub fn iter_preview(&self) -> impl Iterator<Item = (char, &str)> {