diff --git a/crates/red_knot_python_semantic/src/types/diagnostic.rs b/crates/red_knot_python_semantic/src/types/diagnostic.rs
index 2f08b84f88..d15cb4fa15 100644
--- a/crates/red_knot_python_semantic/src/types/diagnostic.rs
+++ b/crates/red_knot_python_semantic/src/types/diagnostic.rs
@@ -11,7 +11,7 @@ use crate::{declare_lint, Db};
 use ruff_db::diagnostic::{Diagnostic, DiagnosticId, Severity, Span};
 use ruff_db::files::File;
 use ruff_python_ast::{self as ast, AnyNodeRef};
-use ruff_text_size::{Ranged, TextRange};
+use ruff_text_size::TextRange;
 use rustc_hash::FxHashSet;
 use std::borrow::Cow;
 use std::fmt::Formatter;
@@ -811,12 +811,6 @@ impl Diagnostic for TypeCheckDiagnostic {
     }
 }
 
-impl Ranged for TypeCheckDiagnostic {
-    fn range(&self) -> TextRange {
-        self.range
-    }
-}
-
 /// A collection of type check diagnostics.
 ///
 /// The diagnostics are wrapped in an `Arc` because they need to be cloned multiple times