diff --git a/psycopg/column_type.c b/psycopg/column_type.c
index b7007065..e85509c8 100644
--- a/psycopg/column_type.c
+++ b/psycopg/column_type.c
@@ -108,6 +108,16 @@ column_init(columnObject *self, PyObject *args, PyObject *kwargs)
         return -1;
     }
 
+    Py_XINCREF(self->name);
+    Py_XINCREF(self->type_code);
+    Py_XINCREF(self->display_size);
+    Py_XINCREF(self->internal_size);
+    Py_XINCREF(self->precision);
+    Py_XINCREF(self->scale);
+    Py_XINCREF(self->null_ok);
+    Py_XINCREF(self->table_oid);
+    Py_XINCREF(self->table_column);
+
     return 0;
 }