diff --git a/src/env/environment_impl.rs b/src/env/environment_impl.rs
index d772c0eba..111436fc9 100644
--- a/src/env/environment_impl.rs
+++ b/src/env/environment_impl.rs
@@ -63,7 +63,7 @@ fn next_export_generation() -> ExportGeneration {
     1 + GEN.fetch_add(1, Ordering::Relaxed)
 }
 
-fn set_umask(list_val: &Vec<WString>) -> EnvStackSetResult {
+fn set_umask(list_val: &[WString]) -> EnvStackSetResult {
     if list_val.len() != 1 || list_val[0].is_empty() {
         return EnvStackSetResult::Invalid;
     }
diff --git a/src/lib.rs b/src/lib.rs
index ddfb8fb7d..8754e76d8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -19,7 +19,6 @@
 #![allow(clippy::needless_return)]
 #![allow(clippy::new_without_default)]
 #![allow(clippy::option_map_unit_fn)]
-#![allow(clippy::ptr_arg)]
 #![allow(clippy::redundant_slicing)]
 #![allow(clippy::too_many_arguments)]
 #![allow(clippy::uninlined_format_args)]
diff --git a/src/tokenizer.rs b/src/tokenizer.rs
index f13f80b4d..9f37e5e6e 100644
--- a/src/tokenizer.rs
+++ b/src/tokenizer.rs
@@ -570,7 +570,7 @@ impl<'c> Tokenizer<'c> {
         fn process_opening_quote(
             this: &mut Tokenizer,
             quoted_cmdsubs: &mut Vec<usize>,
-            paran_offsets: &Vec<usize>,
+            paran_offsets: &[usize],
             quote: char,
         ) -> Result<(), usize> {
             this.on_quote_toggle