diff --git a/opm/parser/eclipse/EclipseState/Schedule/Completion.cpp b/opm/parser/eclipse/EclipseState/Schedule/Completion.cpp
index 6670ab9a0..084fd994b 100644
--- a/opm/parser/eclipse/EclipseState/Schedule/Completion.cpp
+++ b/opm/parser/eclipse/EclipseState/Schedule/Completion.cpp
@@ -246,16 +246,15 @@ namespace Opm {
         return m_segment_number;
     }
 
-    void Completion::setSegmentNumber(const int segment_number){
-        m_segment_number = segment_number;
-    }
-
     double Completion::getCenterDepth() const {
         return m_center_depth;
     }
 
-    void Completion::setCenterDepth(const double center_depth){
-        m_center_depth = center_depth;
+    void Completion::attachSegment(int segmentNumber , double centerDepth) {
+        assert(segmentNumber > 0);
+
+        m_segment_number = segmentNumber;
+        m_center_depth = centerDepth;
     }
 
 
diff --git a/opm/parser/eclipse/EclipseState/Schedule/Completion.hpp b/opm/parser/eclipse/EclipseState/Schedule/Completion.hpp
index b34bfdada..ea9b62dde 100644
--- a/opm/parser/eclipse/EclipseState/Schedule/Completion.hpp
+++ b/opm/parser/eclipse/EclipseState/Schedule/Completion.hpp
@@ -59,9 +59,8 @@ namespace Opm {
         double getSkinFactor() const;
         void   fixDefaultIJ(int wellHeadI , int wellHeadJ);
         int getSegmentNumber() const;
-        void setSegmentNumber(const int segment_number);
         double getCenterDepth() const;
-        void setCenterDepth(const double center_depth);
+        void attachSegment(const int segmentNumber , const double centerDepth);
 
         WellCompletion::DirectionEnum getDirection() const;
 
diff --git a/opm/parser/eclipse/EclipseState/Schedule/Compsegs.cpp b/opm/parser/eclipse/EclipseState/Schedule/Compsegs.cpp
index ca16c3db5..b1c88632a 100644
--- a/opm/parser/eclipse/EclipseState/Schedule/Compsegs.cpp
+++ b/opm/parser/eclipse/EclipseState/Schedule/Compsegs.cpp
@@ -192,8 +192,7 @@ namespace Opm {
             }
 
             CompletionPtr new_completion = std::make_shared<Completion>(completion_set->get(ic));
-            new_completion->setSegmentNumber(compsegs[i_comp]->m_segment_number);
-            new_completion->setCenterDepth(compsegs[i_comp]->m_center_depth);
+            new_completion->attachSegment(compsegs[i_comp]->m_segment_number, compsegs[i_comp]->m_center_depth);
             completion_set->add(new_completion);
         }