diff --git a/src/mathed/math_updowninset.C b/src/mathed/math_updowninset.C
index 86aeb2b317..7c55479afa 100644
--- a/src/mathed/math_updowninset.C
+++ b/src/mathed/math_updowninset.C
@@ -149,10 +149,13 @@ void MathUpDownInset::Write(std::ostream & os, bool fragile) const
 
 void MathUpDownInset::Metrics(MathStyles st, int asc, int des)
 {
+	size_ = st;
+	MathStyles tt = smallerStyleScript(st);
+	
 	if (up())
-		xcell(0).Metrics(st);
+		xcell(0).Metrics(tt);
 	if (down())
-		xcell(1).Metrics(st);
+		xcell(1).Metrics(tt);
 
 	// we assume that asc, des, wid are the metrics of the item in front
 	// of this MathScriptInset
diff --git a/src/mathed/support.C b/src/mathed/support.C
index 47f4736fca..360ccf6211 100644
--- a/src/mathed/support.C
+++ b/src/mathed/support.C
@@ -218,10 +218,12 @@ LyXFont WhichFont(MathTextCodes type, MathStyles size)
 		break;
 
 	case LM_ST_SCRIPT:
+		f.decSize();
 		f.decSize();
 		break;
 
 	case LM_ST_SCRIPTSCRIPT:
+		f.decSize();
 		f.decSize();
 		f.decSize();
 		break;