diff --git a/psycopg/utils.c b/psycopg/utils.c
index 7febf3c5..7f8e0adf 100644
--- a/psycopg/utils.c
+++ b/psycopg/utils.c
@@ -365,8 +365,7 @@ exit:
  * Create a new error of the given type with extra attributes.
  */
 
-/* TODO: may have been changed to BORROWED */
-RAISES PyObject *
+RAISES BORROWED PyObject *
 psyco_set_error(PyObject *exc, cursorObject *curs, const char *msg)
 {
     PyObject *pymsg;
diff --git a/psycopg/utils.h b/psycopg/utils.h
index fd3893c9..3855cd86 100644
--- a/psycopg/utils.h
+++ b/psycopg/utils.h
@@ -53,7 +53,7 @@ HIDDEN PyObject *psycopg_make_dsn(PyObject *dsn, PyObject *kwargs);
 HIDDEN PyObject *psycopg_text_from_chars_safe(
     const char *str, Py_ssize_t len, PyObject *decoder);
 
-RAISES HIDDEN PyObject *psyco_set_error(
+HIDDEN RAISES BORROWED PyObject *psyco_set_error(
     PyObject *exc, cursorObject *curs, const char *msg);
 
 HIDDEN PyObject *psyco_GetDecimalType(void);