diff --git a/src/gridtools/GridVessel.cpp b/src/gridtools/GridVessel.cpp
index 42ec3c172095e0186b82085ee2d49d0618387172..55def546ff73929f527c79f8f2eddc17e204f4f6 100644
--- a/src/gridtools/GridVessel.cpp
+++ b/src/gridtools/GridVessel.cpp
@@ -1,5 +1,5 @@
 /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-   Copyright (c) 2015,2016 The plumed team
+   Copyright (c) 2015-2017 The plumed team
    (see the PEOPLE file at the root of the distribution for a list of names)
 
    See http://www.plumed.org for more information.