diff --git a/crates/nu-command/src/filters/lines.rs b/crates/nu-command/src/filters/lines.rs
index 31fbcf2c25..322d8a879d 100644
--- a/crates/nu-command/src/filters/lines.rs
+++ b/crates/nu-command/src/filters/lines.rs
@@ -245,7 +245,7 @@ impl Iterator for RawStreamLinesAdapter {
                                 }
                             }
                         }
-                        Err(_) => todo!(),
+                        Err(err) => return Some(Err(err)),
                     }
                 } else {
                     self.inner_complete = true;
diff --git a/crates/nu-command/tests/commands/lines.rs b/crates/nu-command/tests/commands/lines.rs
index ee8dc5881f..2bfebbabf3 100644
--- a/crates/nu-command/tests/commands/lines.rs
+++ b/crates/nu-command/tests/commands/lines.rs
@@ -61,3 +61,11 @@ fn lines_mixed_line_endings() {
 
     assert_eq!(actual.out, "3");
 }
+
+#[cfg(not(windows))]
+#[test]
+fn lines_on_error() {
+    let actual = nu!("open . | lines");
+
+    assert!(actual.err.contains("Is a directory"));
+}