diff --git a/src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/PropertyGrid/Editors/NumberEditor.xaml.cs b/src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/PropertyGrid/Editors/NumberEditor.xaml.cs
index 555e95a33e..4f8c7bbcf6 100644
--- a/src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/PropertyGrid/Editors/NumberEditor.xaml.cs
+++ b/src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/PropertyGrid/Editors/NumberEditor.xaml.cs
@@ -94,7 +94,7 @@ namespace ICSharpCode.WpfDesign.Designer.PropertyGrid.Editors
 
 			var range = Metadata.GetValueRange(PropertyNode.FirstProperty);
 			if (range == null) {
-				range = new NumberRange() { Min = 0, Max = double.MaxValue };
+				range = new NumberRange() { Min = double.MinValue, Max = double.MaxValue };
 			}
 
 			if (range.Min == double.MinValue) {