diff --git a/opm/output/OutputWriter.hpp b/opm/output/OutputWriter.hpp
index 15117a565..b4d72b3ad 100644
--- a/opm/output/OutputWriter.hpp
+++ b/opm/output/OutputWriter.hpp
@@ -75,7 +75,7 @@ public:
      * This routine should be called before the first timestep (i.e. when
      * timer.currentStepNum () == 0)
      */
-    virtual void writeInit( time_t current_posix_time, double start_time, const NNC& nnc = NNC() ) = 0;
+    virtual void writeInit( const NNC& nnc = NNC() ) = 0;
 
     /*!
      * \brief Write a blackoil reservoir state to disk for later inspection with
diff --git a/opm/output/eclipse/EclipseWriter.hpp b/opm/output/eclipse/EclipseWriter.hpp
index a6b8acc64..a773f81b0 100644
--- a/opm/output/eclipse/EclipseWriter.hpp
+++ b/opm/output/eclipse/EclipseWriter.hpp
@@ -55,7 +55,7 @@ public:
      *
      * If NNC is given, writes TRANNNC keyword.
      */
-    void writeInit( time_t current_time, double start_time, const NNC& nnc = NNC() );
+    void writeInit( time_t current_posix_time, const NNC& nnc = NNC() );
 
     /*!
      * \brief Write a reservoir state and summary information to disk.
diff --git a/src/opm/output/eclipse/EclipseWriter.cpp b/src/opm/output/eclipse/EclipseWriter.cpp
index c33df447e..7a3286263 100644
--- a/src/opm/output/eclipse/EclipseWriter.cpp
+++ b/src/opm/output/eclipse/EclipseWriter.cpp
@@ -554,8 +554,7 @@ EclipseWriter::Impl::Impl( std::shared_ptr< const EclipseState > eclipseState,
     , ert_phase_mask( ertPhaseMask( eclipseState->getTableManager() ) )
 {}
 
-void EclipseWriter::writeInit( time_t current_posix_time, double start_time, const NNC& nnc)
-{
+void EclipseWriter::writeInit( time_t current_posix_time, const NNC& nnc ) {
     if( !this->impl->output_enabled )
         return;
 
diff --git a/tests/test_EclipseWriter.cpp b/tests/test_EclipseWriter.cpp
index 1f4f6ef6d..fe3b604e8 100644
--- a/tests/test_EclipseWriter.cpp
+++ b/tests/test_EclipseWriter.cpp
@@ -266,7 +266,7 @@ BOOST_AUTO_TEST_CASE(EclipseWriterIntegration)
 
         auto start_time = util_make_datetime( 0, 0, 0, 10, 10, 2008 );
         auto first_step = util_make_datetime( 0, 0, 0, 10, 11, 2008 );
-        eclWriter.writeInit( start_time, start_time );
+        eclWriter.writeInit( start_time );
 
         data::Wells wells;
 
diff --git a/tests/test_RFT.cpp b/tests/test_RFT.cpp
index b7a1266fa..f8a31244f 100755
--- a/tests/test_RFT.cpp
+++ b/tests/test_RFT.cpp
@@ -124,7 +124,7 @@ BOOST_AUTO_TEST_CASE(test_RFT) {
         EclipseWriter eclipseWriter( eclipseState, numCells, nullptr );
         time_t btime = util_make_datetime( 0, 0, 0, 1, 12, 1979 );
         time_t start_time = util_make_datetime( 0, 0, 0, 10, 10, 2008 );
-        eclipseWriter.writeInit( start_time, btime);
+        eclipseWriter.writeInit( start_time );
 
 
 
diff --git a/tests/test_Restart.cpp b/tests/test_Restart.cpp
index f1071cf9d..0080a3322 100644
--- a/tests/test_Restart.cpp
+++ b/tests/test_Restart.cpp
@@ -232,7 +232,7 @@ first_sim(test_work_area_type * test_area) {
     EclipseWriter eclWriter( eclipseState, num_cells, nullptr );
     auto start_time = util_make_datetime( 0, 0, 0, 1, 11, 1979 );
     auto first_step = util_make_datetime( 0, 0, 0, 10, 10, 2008 );
-    eclWriter.writeInit( start_time, start_time );
+    eclWriter.writeInit( start_time );
 
     auto sol = mkSolution( num_cells );
     auto wells = mkWells();
diff --git a/tests/test_writenumwells.cpp b/tests/test_writenumwells.cpp
index d61bc198e..8681ca09d 100644
--- a/tests/test_writenumwells.cpp
+++ b/tests/test_writenumwells.cpp
@@ -142,7 +142,7 @@ BOOST_AUTO_TEST_CASE(EclipseWriteRestartWellInfo) {
     EclipseWriter eclipseWriter( eclipseState, num_cells, nullptr );
 
     time_t start_time = util_make_datetime( 0, 0, 0, 1, 11, 1979 );
-    eclipseWriter.writeInit( start_time, start_time );
+    eclipseWriter.writeInit( start_time );
 
     int countTimeStep = eclipseState->getSchedule()->getTimeMap()->numTimesteps();