Intellisense help is limited to 256 characters

If I use this, then Intellisense chops off everything past the first 255 characters:

[ExcelArgument(Name = "Column Name", Description = "Use column name, it will suggest one of: PropertyA, PropertyB, PropertyC, PropertyD, PropertyE, PropertyF, PropertyG, PropertyH, PropertyI, PropertyJ, PropertyK, PropertyL, PropertyM, PropertyN, PropertyO, PropertyP, PropertyQ, PropertyR, PropertyS, PropertyT, PropertyU, PropertyV, PropertyW, PropertyX, PropertyY, PropertyZ")]