diff --git a/ProcessLib/Process.h b/ProcessLib/Process.h
index 753b27d5db406c736378f6991cfba77226a72269..acce847d378bd3c0fdcf7c9569c17d3b1546c91d 100644
--- a/ProcessLib/Process.h
+++ b/ProcessLib/Process.h
@@ -25,6 +25,8 @@ public:
     virtual ~Process() = default;
 
     virtual void initialize() = 0;
+    virtual void solve() = 0;
+    virtual void post() = 0;
 
 protected:
     MeshLib::Mesh const& _mesh;