diff --git a/ebos/eclwriter.hh b/ebos/eclwriter.hh
index b7550ed9c..5444e7fb3 100644
--- a/ebos/eclwriter.hh
+++ b/ebos/eclwriter.hh
@@ -191,8 +191,8 @@ public:
     EclWriter(Simulator& simulator)
         : simulator_(simulator)
         , collectToIORank_(simulator_.vanguard())
-        , eclOutputModule_(simulator, collectToIORank_)
     {
+        this->eclOutputModule_ = std::make_unique<EclOutputBlackOilModule<TypeTag>>(simulator, this->collectToIORank_);
         if (collectToIORank_.isIORank()) {
             eclIO_.reset(new Opm::EclipseIO(simulator_.vanguard().eclState(),
                                             Opm::UgGridHelpers::createEclipseGrid(globalGrid(), simulator_.vanguard().eclState().getInputGrid()),
@@ -279,19 +279,19 @@ public:
         this->prepareLocalCellData(isSubStep, reportStepNum);
 
         if (collectToIORank_.isParallel())
-            collectToIORank_.collect({}, eclOutputModule_.getBlockData(),
+            collectToIORank_.collect({}, eclOutputModule_->getBlockData(),
                                      localWellData, localGroupAndNetworkData);
 
         std::map<std::string, double> miscSummaryData;
         std::map<std::string, std::vector<double>> regionData;
-        auto inplace = eclOutputModule_.outputFipLog(miscSummaryData, regionData, isSubStep);
+        auto inplace = eclOutputModule_->outputFipLog(miscSummaryData, regionData, isSubStep);
 
         bool forceDisableProdOutput = false;
         bool forceDisableInjOutput = false;
         bool forceDisableCumOutput = false;
-        eclOutputModule_.outputProdLog(reportStepNum, isSubStep, forceDisableProdOutput);
-        eclOutputModule_.outputInjLog(reportStepNum, isSubStep, forceDisableInjOutput);
-        eclOutputModule_.outputCumLog(reportStepNum, isSubStep, forceDisableCumOutput);
+        eclOutputModule_->outputProdLog(reportStepNum, isSubStep, forceDisableProdOutput);
+        eclOutputModule_->outputInjLog(reportStepNum, isSubStep, forceDisableInjOutput);
+        eclOutputModule_->outputCumLog(reportStepNum, isSubStep, forceDisableCumOutput);
 
         std::vector<char> buffer;
         if (this->collectToIORank_.isIORank()) {
@@ -316,7 +316,7 @@ public:
             const auto& blockData
                 = this->collectToIORank_.isParallel()
                 ? this->collectToIORank_.globalBlockData()
-                : this->eclOutputModule_.getBlockData();
+                : this->eclOutputModule_->getBlockData();
 
             summary.eval(summaryState(),
                          reportStepNum,
@@ -324,7 +324,7 @@ public:
                          wellData,
                          groupAndNetworkData,
                          miscSummaryData,
-                         eclOutputModule_.initialInplace(),
+                         eclOutputModule_->initialInplace(),
                          inplace,
                          wbp_calculators,
                          regionData,
@@ -359,7 +359,7 @@ public:
         const int reportStepNum = simulator_.episodeIndex() + 1;
 
         this->prepareLocalCellData(isSubStep, reportStepNum);
-        this->eclOutputModule_.outputErrorLog();
+        this->eclOutputModule_->outputErrorLog();
 
         // output using eclWriter if enabled
         auto localWellData = simulator_.problem().wellModel().wellData();
@@ -368,14 +368,14 @@ public:
 
         Opm::data::Solution localCellData = {};
         if (! isSubStep) {
-            this->eclOutputModule_.assignToSolution(localCellData);
+            this->eclOutputModule_->assignToSolution(localCellData);
 
             // add cell data to perforations for Rft output
-            this->eclOutputModule_.addRftDataToWells(localWellData, reportStepNum);
+            this->eclOutputModule_->addRftDataToWells(localWellData, reportStepNum);
         }
 
         if (this->collectToIORank_.isParallel()) {
-            collectToIORank_.collect(localCellData, eclOutputModule_.getBlockData(),
+            collectToIORank_.collect(localCellData, eclOutputModule_->getBlockData(),
                                      localWellData, localGroupAndNetworkData);
         }
 
@@ -420,7 +420,7 @@ public:
 
         const auto& gridView = simulator_.vanguard().gridView();
         unsigned numElements = gridView.size(/*codim=*/0);
-        eclOutputModule_.allocBuffers(numElements, restartStepIdx, /*isSubStep=*/false, /*log=*/false, /*isRestart*/ true);
+        eclOutputModule_->allocBuffers(numElements, restartStepIdx, /*isSubStep=*/false, /*log=*/false, /*isRestart*/ true);
 
         {
             Opm::SummaryState& summaryState = simulator_.vanguard().summaryState();
@@ -429,7 +429,7 @@ public:
                                                      gridView.grid().comm());
             for (unsigned elemIdx = 0; elemIdx < numElements; ++elemIdx) {
                 unsigned globalIdx = collectToIORank_.localIdxToGlobalIdx(elemIdx);
-                eclOutputModule_.setRestart(restartValues.solution, elemIdx, globalIdx);
+                eclOutputModule_->setRestart(restartValues.solution, elemIdx, globalIdx);
             }
 
             if (inputThpres.active()) {
@@ -452,7 +452,7 @@ public:
     {}
 
     const EclOutputBlackOilModule<TypeTag>& eclOutputModule() const
-    { return eclOutputModule_; }
+    { return *eclOutputModule_; }
 
     Scalar restartTimeStepSize() const
     { return restartTimeStepSize_; }
@@ -717,7 +717,7 @@ private:
         const int numElements = gridView.size(/*codim=*/0);
         const bool log = collectToIORank_.isIORank();
 
-        eclOutputModule_.allocBuffers(numElements, reportStepNum,
+        eclOutputModule_->allocBuffers(numElements, reportStepNum,
                                       isSubStep, log, /*isRestart*/ false);
 
         ElementContext elemCtx(simulator_);
@@ -730,7 +730,7 @@ private:
             elemCtx.updatePrimaryStencil(elem);
             elemCtx.updatePrimaryIntensiveQuantities(/*timeIdx=*/0);
 
-            eclOutputModule_.processElement(elemCtx);
+            eclOutputModule_->processElement(elemCtx);
         }
     }
 
@@ -784,7 +784,7 @@ private:
 
     Simulator& simulator_;
     CollectDataToIORankType collectToIORank_;
-    EclOutputBlackOilModule<TypeTag> eclOutputModule_;
+    std::unique_ptr<EclOutputBlackOilModule<TypeTag>> eclOutputModule_;
     std::unique_ptr<Opm::EclipseIO> eclIO_;
     std::unique_ptr<TaskletRunner> taskletRunner_;
     Scalar restartTimeStepSize_;