diff --git a/pyo3-ffi/src/object.rs b/pyo3-ffi/src/object.rs
index 1f3a1094..0e0243cd 100644
--- a/pyo3-ffi/src/object.rs
+++ b/pyo3-ffi/src/object.rs
@@ -487,7 +487,7 @@ pub unsafe fn Py_INCREF(op: *mut PyObject) {
         )
     ))]
     {
-        return _Py_IncRef(op);
+        _Py_IncRef(op);
     }
 
     #[cfg(all(py_sys_config = "Py_REF_DEBUG", not(Py_3_10)))]
@@ -552,7 +552,7 @@ pub unsafe fn Py_DECREF(op: *mut PyObject) {
         )
     ))]
     {
-        return _Py_DecRef(op);
+        _Py_DecRef(op);
     }
 
     #[cfg(all(py_sys_config = "Py_REF_DEBUG", not(Py_3_10)))]
diff --git a/tests/ui/not_send.stderr b/tests/ui/not_send.stderr
index 395723cb..9ac51f36 100644
--- a/tests/ui/not_send.stderr
+++ b/tests/ui/not_send.stderr
@@ -34,7 +34,7 @@ note: required because it's used within this closure
   |
 4 |     py.allow_threads(|| { drop(py); });
   |                      ^^
-  = note: required for `[closure@$DIR/tests/ui/not_send.rs:4:22: 4:24]` to implement `Ungil`
+  = note: required for `{closure@$DIR/tests/ui/not_send.rs:4:22: 4:24}` to implement `Ungil`
 note: required by a bound in `pyo3::Python::<'py>::allow_threads`
  --> src/marker.rs
   |
diff --git a/tests/ui/not_send2.stderr b/tests/ui/not_send2.stderr
index 2e6db009..d3a60a1f 100644
--- a/tests/ui/not_send2.stderr
+++ b/tests/ui/not_send2.stderr
@@ -27,7 +27,7 @@ note: required because it's used within this closure
    |
 8  |         py.allow_threads(|| {
    |                          ^^
-   = note: required for `[closure@$DIR/tests/ui/not_send2.rs:8:26: 8:28]` to implement `Ungil`
+   = note: required for `{closure@$DIR/tests/ui/not_send2.rs:8:26: 8:28}` to implement `Ungil`
 note: required by a bound in `pyo3::Python::<'py>::allow_threads`
   --> src/marker.rs
    |