diff --git a/tests/ui/expect_tool_lint_rfc_2383.rs b/tests/ui/expect_tool_lint_rfc_2383.rs
index 82ac4db172d8..68271048fcb9 100644
--- a/tests/ui/expect_tool_lint_rfc_2383.rs
+++ b/tests/ui/expect_tool_lint_rfc_2383.rs
@@ -36,8 +36,6 @@ pub fn rustc_lints() {
 
         #[expect(invalid_nan_comparisons)]
         //~^ ERROR: this lint expectation is unfulfilled
-        //~| NOTE: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
-        //~| ERROR: this lint expectation is unfulfilled
         let _b = x == 5;
     }
 }
diff --git a/tests/ui/expect_tool_lint_rfc_2383.stderr b/tests/ui/expect_tool_lint_rfc_2383.stderr
index b274d5c23693..aa187f351f45 100644
--- a/tests/ui/expect_tool_lint_rfc_2383.stderr
+++ b/tests/ui/expect_tool_lint_rfc_2383.stderr
@@ -14,36 +14,28 @@ LL |         #[expect(invalid_nan_comparisons)]
    |                  ^^^^^^^^^^^^^^^^^^^^^^^
 
 error: this lint expectation is unfulfilled
-  --> tests/ui/expect_tool_lint_rfc_2383.rs:37:18
-   |
-LL |         #[expect(invalid_nan_comparisons)]
-   |                  ^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
-
-error: this lint expectation is unfulfilled
-  --> tests/ui/expect_tool_lint_rfc_2383.rs:110:14
+  --> tests/ui/expect_tool_lint_rfc_2383.rs:108:14
    |
 LL |     #[expect(clippy::almost_swapped)]
    |              ^^^^^^^^^^^^^^^^^^^^^^
 
 error: this lint expectation is unfulfilled
-  --> tests/ui/expect_tool_lint_rfc_2383.rs:118:14
+  --> tests/ui/expect_tool_lint_rfc_2383.rs:116:14
    |
 LL |     #[expect(clippy::bytes_nth)]
    |              ^^^^^^^^^^^^^^^^^
 
 error: this lint expectation is unfulfilled
-  --> tests/ui/expect_tool_lint_rfc_2383.rs:124:14
+  --> tests/ui/expect_tool_lint_rfc_2383.rs:122:14
    |
 LL |     #[expect(clippy::if_same_then_else)]
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: this lint expectation is unfulfilled
-  --> tests/ui/expect_tool_lint_rfc_2383.rs:130:14
+  --> tests/ui/expect_tool_lint_rfc_2383.rs:128:14
    |
 LL |     #[expect(clippy::overly_complex_bool_expr)]
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 7 previous errors
+error: aborting due to 6 previous errors