diff --git a/LibBSP/Source/Structs/MAP/MAPBrush.cs b/LibBSP/Source/Structs/MAP/MAPBrush.cs
index da76b71..777d26b 100644
--- a/LibBSP/Source/Structs/MAP/MAPBrush.cs
+++ b/LibBSP/Source/Structs/MAP/MAPBrush.cs
@@ -18,6 +18,7 @@ namespace LibBSP {
 
 		public bool isDetail = false;
 		public bool isWater = false;
+		public bool isManVis = false;
 
 		/// <summary>
 		/// Creates a new empty <see cref="MAPBrush"/> object. Internal data will have to be set manually.