diff --git a/clippy_utils/src/ty.rs b/clippy_utils/src/ty.rs
index cb700126c2b..a6572011644 100644
--- a/clippy_utils/src/ty.rs
+++ b/clippy_utils/src/ty.rs
@@ -226,7 +226,7 @@ pub fn implements_trait_with_env<'tcx>(
     ty_params: impl IntoIterator<Item = Option<GenericArg<'tcx>>>,
 ) -> bool {
     // Clippy shouldn't have infer types
-    assert!(!ty.needs_infer());
+    assert!(!ty.has_infer());
 
     let ty = tcx.erase_regions(ty);
     if ty.has_escaping_bound_vars() {