diff --git a/src/w_wad.c b/src/w_wad.c
index 4a6900113..4a1d44548 100644
--- a/src/w_wad.c
+++ b/src/w_wad.c
@@ -2657,7 +2657,8 @@ static lumpchecklist_t folderblacklist[] =
 {
 	{"Lua/", 4},
 	{"SOC/", 4},
-	{"Sprites/",  8},
+	{"Sprites/", 8},
+	{"LongSprites/", 12},
 	{"Textures/", 9},
 	{"Patches/", 8},
 	{"Flats/", 6},