diff --git a/src/maploader/glnodes.cpp b/src/maploader/glnodes.cpp
index df569b1ae8..33051b6c12 100644
--- a/src/maploader/glnodes.cpp
+++ b/src/maploader/glnodes.cpp
@@ -900,7 +900,8 @@ bool MapLoader::LoadGLNodes(MapData * map)
 					break;
 				}
 				else
-					gwalumps[i] = f_gwa->GetEntryReader(li + i + 1, FileSys::READER_NEW, FileSys::READERFLAG_SEEKABLE);
+					// This is a special case. The container for the map WAD is not set up to create new file handles for itself so this needs to cache the content here.
+					gwalumps[i] = f_gwa->GetEntryReader(li + i + 1, FileSys::READER_CACHED, FileSys::READERFLAG_SEEKABLE);
 			}
 			if (result) result = DoLoadGLNodes(gwalumps);
 		}