diff --git a/opm/core/utility/writeECLData.cpp b/opm/core/utility/writeECLData.cpp
index 1eff53e6..7df07016 100644
--- a/opm/core/utility/writeECLData.cpp
+++ b/opm/core/utility/writeECLData.cpp
@@ -153,9 +153,12 @@ namespace Opm
 
 namespace Opm
 {
+
     void writeECLData(const UnstructuredGrid&,
                       const DataMap&,
-                      const SimulatorTimer&,
+                      const int,
+                      const double,
+                      const boost::posix_time::ptime&,
                       const std::string&,
                       const std::string&)
     {