diff --git a/PInvoke/ComCtl32/CommCtrl.cs b/PInvoke/ComCtl32/CommCtrl.cs
index 1d6da0c3..f4bdd976 100644
--- a/PInvoke/ComCtl32/CommCtrl.cs
+++ b/PInvoke/ComCtl32/CommCtrl.cs
@@ -16,6 +16,7 @@ namespace Vanara.PInvoke
 
 		public const int I_IMAGECALLBACK = -1;
 		public const int I_IMAGENONE = -2;
+		public const int INFOTIPSIZE = 1024;
 		public const int NM_FIRST = 0;
 
 		[PInvokeData("Commctrl.h")]