diff --git a/source/app/controllers/util.py b/source/app/controllers/util.py
index b8561c2..d41db4e 100644
--- a/source/app/controllers/util.py
+++ b/source/app/controllers/util.py
@@ -2392,6 +2392,7 @@ class ImportFacturaLibre(object):
             '0': 0.0,
             '16': 0.16,
             '16.00': 0.16,
+            '-16': 0.16,
             '11': 0.11,
             '-10': 0.10,
             '-2': 0.02,