diff --git a/Code/Mantid/Framework/Kernel/inc/MantidKernel/CompositeValidator.h b/Code/Mantid/Framework/Kernel/inc/MantidKernel/CompositeValidator.h
index 72ec939e8d0b..dc148ef3c7a3 100644
--- a/Code/Mantid/Framework/Kernel/inc/MantidKernel/CompositeValidator.h
+++ b/Code/Mantid/Framework/Kernel/inc/MantidKernel/CompositeValidator.h
@@ -113,6 +113,7 @@ namespace Kernel
 
      virtual void modify_validator(IValidator<TYPE> *pNewValidator)
      {
+         UNUSED_ARG(pNewValidator);
      }
   private:
     /// Private Copy constructor: NO DIRECT COPY ALLOWED
diff --git a/Code/Mantid/MantidQt/API/inc/MantidQtAPI/AlgorithmDialog.h b/Code/Mantid/MantidQt/API/inc/MantidQtAPI/AlgorithmDialog.h
index 15c3bcc2bbba..ce25d7ee6bdc 100644
--- a/Code/Mantid/MantidQt/API/inc/MantidQtAPI/AlgorithmDialog.h
+++ b/Code/Mantid/MantidQt/API/inc/MantidQtAPI/AlgorithmDialog.h
@@ -248,13 +248,13 @@ protected slots:
      @pProp -- the pointer to the property
      @row   -- the vertical position of the property widget within the initated dialog box
      Should be pure virtual but as current custom vidgets do not use it, made empty unless overloaded */
-    virtual void createSpecificPropertyWidget(Mantid::Kernel::Property *pProp, int row){};
+    virtual void createSpecificPropertyWidget(Mantid::Kernel::Property *, int ){};
  /** The function deletes widgets, associated with property;
      It used in dynamic propeties, which change as property contents, validators or settings change
      @pProp -- the pointer to the property
      returns-- the vertical position of the composite widget within the widget window;
      Should be pure virtual but as current custom vidgets do not use it, made empty unless overloaded */
-    virtual int deletePropertyWidgets(Mantid::Kernel::Property *pProp){return -1;}
+    virtual int deletePropertyWidgets(Mantid::Kernel::Property *){return -1;}
 
   /** @name Member variables. */
   //@{