diff --git a/postgres/numeric.go b/postgres/numeric.go
index b5079c2..3d477b6 100644
--- a/postgres/numeric.go
+++ b/postgres/numeric.go
@@ -120,6 +120,9 @@ func (n Numeric) MarshalJSON() ([]byte, error) {
 
 	split := length - exp
 	bytesWithSeparator = append(bytesWithSeparator, bytes[:split]...)
+	if split == 1 && n.Int.Int64() < 0 {
+		bytesWithSeparator = append(bytesWithSeparator, byte('0'))
+	}
 	bytesWithSeparator = append(bytesWithSeparator, byte('.'))
 	bytesWithSeparator = append(bytesWithSeparator, bytes[split:]...)
 	return bytesWithSeparator, nil