diff --git a/src/reader/reader.rs b/src/reader/reader.rs
index 67c86538a..fc893976e 100644
--- a/src/reader/reader.rs
+++ b/src/reader/reader.rs
@@ -2207,7 +2207,7 @@ fn delete_char(&mut self, backward: bool /* = true */) {
         // width at least 1.
         loop {
             pos -= 1;
-            if fish_wcwidth(el.text().char_at(pos)).is_some_and(|w| w != 0) || pos == 0 {
+            if fish_wcwidth(el.text().char_at(pos)).is_none_or(|w| w != 0) || pos == 0 {
                 break;
             }
         }