diff --git a/db.lua b/db.lua
index b7a8758..7eb8add 100644
--- a/db.lua
+++ b/db.lua
@@ -192,7 +192,7 @@ local function testobjfilename(fname)
 		end
 	end
 	
-	return not fname:find"[/\\\0-\31%<%>%:%\"%|%?%*]" and #fname <= 56
+	return not fname:find"[/\\\0-\31%<%>%:%\"%|%?%*%[%]%%]" and #fname <= 56
 end
 
 local function urltophysical(p)