diff --git a/src/commands/CmdCalendar.cpp b/src/commands/CmdCalendar.cpp
index caf211ffc..1a956a605 100644
--- a/src/commands/CmdCalendar.cpp
+++ b/src/commands/CmdCalendar.cpp
@@ -177,7 +177,6 @@ int CmdCalendar::execute (std::string& output)
     yFrom = argYear;
 
   // Now begin the data subset and rendering.
-  auto countDueDates = 0;
   if (getPendingDate == true)
   {
     // Find the oldest pending due date.
@@ -190,7 +189,6 @@ int CmdCalendar::execute (std::string& output)
         if (task.has ("due") &&
             !task.hasTag ("nocal"))
         {
-          ++countDueDates;
           Datetime d (task.get ("due"));
           if (d < oldest) oldest = d;
         }
diff --git a/src/commands/CmdCustom.h b/src/commands/CmdCustom.h
index 1c805a45c..521876d65 100644
--- a/src/commands/CmdCustom.h
+++ b/src/commands/CmdCustom.h
@@ -35,7 +35,7 @@ class CmdCustom : public Command
 public:
   CmdCustom (const std::string&, const std::string&, const std::string&);
   bool uses_context () const override;
-  int execute (std::string&);
+  int execute (std::string&) override;
 
 private:
   void validateReportColumns (std::vector <std::string>&);
diff --git a/src/commands/CmdTimesheet.h b/src/commands/CmdTimesheet.h
index 666e7c830..3401abec6 100644
--- a/src/commands/CmdTimesheet.h
+++ b/src/commands/CmdTimesheet.h
@@ -34,7 +34,7 @@ class CmdTimesheet : public Command
 {
 public:
   CmdTimesheet ();
-  int execute (std::string&);
+  int execute (std::string&) override;
   bool uses_context () const override;
 };