diff --git a/gwinc/nb.py b/gwinc/nb.py
index be0be4bfb0bdbdf91eefbc95edab3982606230a9..d75c0998c726249b63f7eb5587d3054298ddf740 100644
--- a/gwinc/nb.py
+++ b/gwinc/nb.py
@@ -270,7 +270,7 @@ class Budget(Noise):
         cal = None
         if isinstance(nc, (list, tuple)):
             noise = nc[0]
-            cals = nc[1]
+            cals = nc[1:]
         else:
             noise = nc
             cals = []