diff --git a/compiler/rustc_typeck/src/check/op.rs b/compiler/rustc_typeck/src/check/op.rs
index 564d7a07630c9..8a758c74b2af1 100644
--- a/compiler/rustc_typeck/src/check/op.rs
+++ b/compiler/rustc_typeck/src/check/op.rs
@@ -960,7 +960,7 @@ fn suggest_impl_missing(err: &mut DiagnosticBuilder<'_>, ty: Ty<'_>, missing_tra
                 missing_trait, ty
             ));
             // This checks if the missing trait is PartialEq to suggest adding a derive
-            if missing_trait.ends_with("PartialEq") {
+            if missing_trait.ends_with("std::cmp::PartialEq") {
                 err.note(&format!(
                     "add `#[derive(PartialEq)]` or manually implement `PartialEq` for `{}`",
                     ty