diff --git a/opm/simulators/linalg/bda/WellContributionsOCLContainer.cpp b/opm/simulators/linalg/bda/WellContributionsOCLContainer.cpp
index 2b13bf79b..da8386528 100644
--- a/opm/simulators/linalg/bda/WellContributionsOCLContainer.cpp
+++ b/opm/simulators/linalg/bda/WellContributionsOCLContainer.cpp
@@ -146,7 +146,7 @@ namespace bda
         event.waitForEvents(events);
 
         // actually apply MultisegmentWells
-        for(Opm::MultisegmentWellContribution *well: multisegments){
+        for(auto well: multisegments){
             well->setReordering(toOrder.data(), true);
             well->apply(x_msw.data(), y_msw.data());
         }
diff --git a/opm/simulators/linalg/bda/WellContributionsOCLContainer.hpp b/opm/simulators/linalg/bda/WellContributionsOCLContainer.hpp
index 0120c4881..08d496141 100644
--- a/opm/simulators/linalg/bda/WellContributionsOCLContainer.hpp
+++ b/opm/simulators/linalg/bda/WellContributionsOCLContainer.hpp
@@ -58,10 +58,10 @@ namespace bda
         void applyMSWells(cl::Buffer& x, cl::Buffer& y);
 
     public:
-        WellContributionsOCLContainer() {};
+        WellContributionsOCLContainer() {}
         ~WellContributionsOCLContainer();
-        WellContributionsOCLContainer(const WellContributionsOCLContainer&) = delete;
-
+        WellContributionsOCLContainer(const  WellContributionsOCLContainer&) = delete;
+        WellContributionsOCLContainer& operator=(const  WellContributionsOCLContainer&) = delete;
         void apply(cl::Buffer& x, cl::Buffer& y);
         void init(Opm::WellContributions &wellContribs, int N, int Nb);
         void copy_to_gpu(Opm::WellContributions &wellContribs, int *toOrder_);