diff --git a/src/columns/ColIMask.cpp b/src/columns/ColIMask.cpp
index 6b0dfaad9..eaf3871af 100644
--- a/src/columns/ColIMask.cpp
+++ b/src/columns/ColIMask.cpp
@@ -27,12 +27,9 @@
 #include <cmake.h>
 #include <ColIMask.h>
 #include <math.h>
-#include <Context.h>
 #include <text.h>
 #include <i18n.h>
 
-extern Context context;
-
 ////////////////////////////////////////////////////////////////////////////////
 ColumnIMask::ColumnIMask ()
 {
@@ -44,11 +41,6 @@ ColumnIMask::ColumnIMask ()
   _examples   = {"12"};
 }
 
-////////////////////////////////////////////////////////////////////////////////
-ColumnIMask::~ColumnIMask ()
-{
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // Set the minimum and maximum widths for the value.
 void ColumnIMask::measure (Task& task, unsigned int& minimum, unsigned int& maximum)
diff --git a/src/columns/ColIMask.h b/src/columns/ColIMask.h
index fd839a2a9..ef3c46396 100644
--- a/src/columns/ColIMask.h
+++ b/src/columns/ColIMask.h
@@ -33,8 +33,6 @@ class ColumnIMask : public ColumnTypeNumeric
 {
 public:
   ColumnIMask ();
-  ~ColumnIMask ();
-
   void measure (Task&, unsigned int&, unsigned int&);
   void render (std::vector <std::string>&, Task&, int, Color&);