persistent-data/space-maps/noop.h | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/persistent-data/space-maps/noop.h b/persistent-data/space-maps/noop.h

index 500dae8..6f71290 100644

--- a/persistent-data/space-maps/noop.h

+++ b/persistent-data/space-maps/noop.h

@@ -61,7 +61,7 @@ namespace persistent_data {

 		maybe_block find_free(span_iterator &it) {

 			fail();

-			return 0;

+			return boost::optional<block_address>(0);

 		}

 		bool count_possibly_greater_than_one(block_address b) const {