1 files changed, 4 insertions, 0 deletions
diff --git a/src/value.cc b/src/value.cc
index 724d87fc..d28883a4 100644
--- a/src/value.cc
+++ b/src/value.cc
@@ -390,6 +390,10 @@ value_t& value_t::operator+=(const value_t& val)
       as_long_lval() += val.as_long();
       return *this;
     case AMOUNT:
+      if (val.as_amount().has_commodity()) {
+	in_place_cast(BALANCE);
+	return *this += val;
+      }
       in_place_cast(AMOUNT);
       as_amount_lval() += val.as_amount();
       return *this;