diff --git a/PROMS/Volian.Controls.Library/DisplayTabControl.cs b/PROMS/Volian.Controls.Library/DisplayTabControl.cs
index bcf5db0f..786c7208 100644
--- a/PROMS/Volian.Controls.Library/DisplayTabControl.cs
+++ b/PROMS/Volian.Controls.Library/DisplayTabControl.cs
@@ -41,7 +41,8 @@ namespace Volian.Controls.Library
 			{
 				_RibbonExpanded = value;
 				foreach (DisplayTabItem tabItem in _MyDisplayTabItems.Values)
-					tabItem.MyStepTabPanel.MyStepTabRibbon.Expanded = _RibbonExpanded;
+					if (tabItem.MyStepTabPanel != null)
+						tabItem.MyStepTabPanel.MyStepTabRibbon.Expanded = _RibbonExpanded;
 			}
 		}
 		#endregion