diff --git a/src/mathed/math_hullinset.C b/src/mathed/math_hullinset.C
index 0e0db0d0d0..49928c5de5 100644
--- a/src/mathed/math_hullinset.C
+++ b/src/mathed/math_hullinset.C
@@ -100,6 +100,13 @@ MathHullInset::MathHullInset(MathInsetTypes t)
 }
 
 
+MathHullInset::MathHullInset(MathInsetTypes t, MathGridInset const & grid)
+	: MathGridInset(grid), objtype_(t), nonum_(1), label_(1)
+{
+	setDefaults();
+}
+
+
 MathHullInset::MathHullInset(MathInsetTypes t, col_type cols)
 	: MathGridInset(cols, 1), objtype_(t), nonum_(1), label_(1)
 {
diff --git a/src/mathed/math_hullinset.h b/src/mathed/math_hullinset.h
index c2747fb14e..35c63f12a2 100644
--- a/src/mathed/math_hullinset.h
+++ b/src/mathed/math_hullinset.h
@@ -21,6 +21,8 @@ public:
 	///
 	explicit MathHullInset(MathInsetTypes t);
 	///
+	MathHullInset(MathInsetTypes t, MathGridInset const & grid);
+	///
 	MathHullInset(MathInsetTypes t, col_type cols);
 	///
 	MathInset * clone() const;
diff --git a/src/mathed/math_sizeinset.h b/src/mathed/math_sizeinset.h
index 9fefc55db0..d9e992e27d 100644
--- a/src/mathed/math_sizeinset.h
+++ b/src/mathed/math_sizeinset.h
@@ -25,6 +25,9 @@ public:
 	void metrics(MathMetricsInfo const & st) const;
 	///
 	void draw(Painter &, int x, int y) const;
+	///
+	bool needsBraces() const { return false; }
+
 	///
 	void write(WriteStream & os) const;
 	///