diff --git a/src/insets/insetgraphicsParams.C b/src/insets/insetgraphicsParams.C
index c0e140316c..ea732a9ca0 100644
--- a/src/insets/insetgraphicsParams.C
+++ b/src/insets/insetgraphicsParams.C
@@ -66,7 +66,7 @@ void InsetGraphicsParams::init()
 	filename.erase();
 	lyxscale = 100;			// lyx scaling in percentage
 	display = lyx::graphics::DefaultDisplay; // display mode; see preferences
-	scale = string();			// output scaling in percentage
+	scale = string("100");			// output scaling in percentage
 	width = LyXLength();
 	height = LyXLength();
 	keepAspectRatio = false;	// for LaTeX output
diff --git a/status.14x b/status.14x
index 8b01bad1c4..93360d970e 100644
--- a/status.14x
+++ b/status.14x
@@ -45,6 +45,8 @@ What's new
 - Fix display of math root inset when the exponent contains large
   things (bug 3295).
 
+- Set a default image size value (bug 2458).
+
 * BUILD/INSTALLATION: