1 files changed, 6 insertions, 0 deletions
diff --git a/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ColumnHeader.cs b/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ColumnHeader.cs
index 2ff57ed5aa0..2edaa99d010 100644
--- a/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ColumnHeader.cs
+++ b/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ColumnHeader.cs
@@ -212,6 +212,9 @@ namespace System.Windows.Forms
 
 				image_index = value;
 				image_key = String.Empty;
+
+				if (owner != null)
+					owner.header_control.Invalidate ();
 			}
 		}
 
@@ -228,6 +231,9 @@ namespace System.Windows.Forms
 			set {
 				image_key = value == null ? String.Empty : value;
 				image_index = -1;
+
+				if (owner != null)
+					owner.header_control.Invalidate ();
 			}
 		}