diff --git a/src/mathed/InsetMathGrid.C b/src/mathed/InsetMathGrid.C
index 98fc5fe44a..23f0f6d70d 100644
--- a/src/mathed/InsetMathGrid.C
+++ b/src/mathed/InsetMathGrid.C
@@ -184,13 +184,6 @@ InsetMathGrid::InsetMathGrid(col_type m, row_type n, char v, docstring const & h
 }
 
 
-InsetMathGrid::~InsetMathGrid()
-{
-	GridInsetMailer mailer(*this);
-	mailer.hideDialog();
-}
-
-
 auto_ptr<InsetBase> InsetMathGrid::doClone() const
 {
 	return auto_ptr<InsetBase>(new InsetMathGrid(*this));
diff --git a/src/mathed/InsetMathGrid.h b/src/mathed/InsetMathGrid.h
index da7eb28e5d..92fa683ff5 100644
--- a/src/mathed/InsetMathGrid.h
+++ b/src/mathed/InsetMathGrid.h
@@ -94,8 +94,6 @@ public:
 	InsetMathGrid(col_type m, row_type n);
 	///
 	InsetMathGrid(col_type m, row_type n, char valign, docstring const & halign);
-	/// Ensures that the dialog is closed.
-	~InsetMathGrid();
 	///
 	void metrics(MetricsInfo & mi) const;
 	///