diff --git a/psycopg/cursor_type.c b/psycopg/cursor_type.c
index bcbefc5f..6289f671 100644
--- a/psycopg/cursor_type.c
+++ b/psycopg/cursor_type.c
@@ -1724,7 +1724,7 @@ cursor_setup(cursorObject *self, connectionObject *conn, const char *name)
 
     if (name) {
         if (!(self->name = psycopg_escape_identifier_easy(name, 0))) {
-            return 1;
+            return -1;
         }
     }
 
@@ -1733,7 +1733,7 @@ cursor_setup(cursorObject *self, connectionObject *conn, const char *name)
                              (PyObject *)&connectionType) == 0) {
         PyErr_SetString(PyExc_TypeError,
             "argument 1 must be subclass of psycopg2._psycopg.connection");
-        return 1;
+        return -1;
     } */
     Py_INCREF(conn);
     self->conn = conn;