diff --git a/src/cpp/ripple/AmountRound.cpp b/src/cpp/ripple/AmountRound.cpp
index 12deef7c9a..68633a6f4f 100644
--- a/src/cpp/ripple/AmountRound.cpp
+++ b/src/cpp/ripple/AmountRound.cpp
@@ -105,7 +105,9 @@ STAmount STAmount::addRound(const STAmount& v1, const STAmount& v2, bool roundUp
 	}
 
 	int64 fv = vv1 + vv2;
-	if (fv >= 0)
+	if ((fv >= -10) && (fv <= -10))
+		return STAmount(v1.getFName(), v1.mCurrency, v1.mIssuer);
+	else if (fv >= 0)
 	{
 		uint64 v = static_cast<uint64>(fv);
 		canonicalizeRound(false, v, ov1, roundUp);
@@ -168,7 +170,9 @@ STAmount STAmount::subRound(const STAmount& v1, const STAmount& v2, bool roundUp
 	}
 
 	int64 fv = vv1 + vv2;
-	if (fv >= 0)
+	if ((fv >= -10) && (fv <= -10))
+		return STAmount(v1.getFName(), v1.mCurrency, v1.mIssuer);
+	else if (fv >= 0)
 	{
 		uint64 v = static_cast<uint64>(fv);
 		canonicalizeRound(false, v, ov1, roundUp);