diff --git a/src/columns/ColMask.cpp b/src/columns/ColMask.cpp
index ed4eea6e2..3e8459ebe 100644
--- a/src/columns/ColMask.cpp
+++ b/src/columns/ColMask.cpp
@@ -27,12 +27,9 @@
 #include <cmake.h>
 #include <ColMask.h>
 #include <math.h>
-#include <Context.h>
 #include <text.h>
 #include <i18n.h>
 
-extern Context context;
-
 ////////////////////////////////////////////////////////////////////////////////
 ColumnMask::ColumnMask ()
 {
@@ -44,11 +41,6 @@ ColumnMask::ColumnMask ()
   _examples   = {"++++---"};
 }
 
-////////////////////////////////////////////////////////////////////////////////
-ColumnMask::~ColumnMask ()
-{
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // Set the minimum and maximum widths for the value.
 void ColumnMask::measure (Task& task, unsigned int& minimum, unsigned int& maximum)
diff --git a/src/columns/ColMask.h b/src/columns/ColMask.h
index 122699270..29f23e670 100644
--- a/src/columns/ColMask.h
+++ b/src/columns/ColMask.h
@@ -33,8 +33,6 @@ class ColumnMask : public ColumnTypeString
 {
 public:
   ColumnMask ();
-  ~ColumnMask ();
-
   void measure (Task&, unsigned int&, unsigned int&);
   void render (std::vector <std::string>&, Task&, int, Color&);