diff options
| -rw-r--r-- | src/amount.cc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/amount.cc b/src/amount.cc index 05145f87..c6463b2b 100644 --- a/src/amount.cc +++ b/src/amount.cc @@ -604,7 +604,9 @@ void amount_t::in_place_invert() throw_(amount_error, _("Cannot invert an uninitialized amount")); _dup(); - mpq_inv(MP(quantity), MP(quantity)); + + if (sign() != 0) + mpq_inv(MP(quantity), MP(quantity)); } void amount_t::in_place_round() |