diff --git a/src/Context.cpp b/src/Context.cpp
index 3a0e4a827..a694516df 100644
--- a/src/Context.cpp
+++ b/src/Context.cpp
@@ -393,20 +393,6 @@ void Context::shadow ()
 */
 }
 
-////////////////////////////////////////////////////////////////////////////////
-void Context::disallowModification () const
-{
-/*
-  if (task.size ()         ||
-      subst.mFrom != ""    ||
-      tagAdditions.size () ||
-      tagRemovals.size ())
-    throw std::string ("The '")
-//        + cmd.command
-        + "' command does not allow further modification of a task.";
-*/
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 void Context::assumeLocations ()
 {
diff --git a/src/Context.h b/src/Context.h
index 112794d7f..9b9175c1b 100644
--- a/src/Context.h
+++ b/src/Context.h
@@ -67,7 +67,6 @@ public:
   void clearMessages ();
   void clear ();
 
-  void disallowModification () const;
   void decomposeSortField (const std::string&, std::string&, bool&);
 
 private: