diff --git a/src/columns/ColTypeDate.cpp b/src/columns/ColTypeDate.cpp
index a7c5e06a7..3e58cb48d 100644
--- a/src/columns/ColTypeDate.cpp
+++ b/src/columns/ColTypeDate.cpp
@@ -201,3 +201,9 @@ void ColumnTypeDate::render (
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+void ColumnTypeDate::modify (Task& task, const std::string& value)
+{
+  task.set (_name, value);
+}
+
+////////////////////////////////////////////////////////////////////////////////
diff --git a/src/columns/ColTypeDate.h b/src/columns/ColTypeDate.h
index 9f9089d0d..789339c04 100644
--- a/src/columns/ColTypeDate.h
+++ b/src/columns/ColTypeDate.h
@@ -39,6 +39,7 @@ public:
   ColumnTypeDate ();
   virtual void measure (Task&, unsigned int&, unsigned int&);
   virtual void render (std::vector <std::string>&, Task&, int, Color&);
+  virtual void modify (Task&, const std::string&);
 };
 
 #endif