diff --git a/src/ast.rs b/src/ast.rs
index 5a7de63fd..284ebec9d 100644
--- a/src/ast.rs
+++ b/src/ast.rs
@@ -663,7 +663,8 @@ fn index_mut(&mut self, index: usize) -> &mut Self::Output {
         impl Acceptor for $name {
             #[allow(unused_variables)]
             fn accept<'a>(&'a self, visitor: &mut dyn NodeVisitor<'a>, reversed: bool) {
-                accept_list_visitor!(Self, accept, visit, self, visitor, reversed, $contents);
+                let _ =
+                    accept_list_visitor!(Self, accept, visit, self, visitor, reversed, $contents);
             }
         }
         impl AcceptorMut for $name {
@@ -3819,7 +3820,7 @@ fn allocate<T: NodeMut + Default>(&self) -> Box<T> {
     // Return the resulting Node pointer. It is never null.
     fn allocate_visit<T: NodeMut + Default>(&mut self) -> Box<T> {
         let mut result = Box::<T>::default();
-        self.visit_mut(&mut *result);
+        let _ = self.visit_mut(&mut *result);
         result
     }
 
diff --git a/src/reader.rs b/src/reader.rs
index 21d4122ae..a12339a77 100644
--- a/src/reader.rs
+++ b/src/reader.rs
@@ -1008,7 +1008,7 @@ pub fn reader_execute_readline_cmd(parser: &Parser, ch: CharEvent) {
             data.rls = Some(ReadlineLoopState::new());
         }
         data.save_screen_state();
-        data.handle_char_event(Some(ch));
+        let _ = data.handle_char_event(Some(ch));
     }
 }