diff --git a/lb_store.lua b/lb_store.lua
index 4dc80d2..488a297 100644
--- a/lb_store.lua
+++ b/lb_store.lua
@@ -353,16 +353,13 @@ COM_AddCommand("lb_write_checksums", function(player)
 end, COM_ADMIN)
 
 COM_AddCommand("lb_known_maps", function(player, map)
-	if not map then
-		CONS_Printf(player, "Usage: <map>")
-		CONS_Printf(player, "Print all known checksums under <map>")
-		return
-	end
-
-	local mapnum = mapnumFromExtended(map)
-	if not mapnum then
-		CONS_Printf(player, string.format("invalid map '%s'", map))
-		return
+	local mapnum = gamemap
+	if map then
+		mapnum = mapnumFromExtended(map)
+		if not mapnum then
+			CONS_Printf(player, string.format("invalid map '%s'", map))
+			return
+		end
 	end
 
 	local known = {}
@@ -380,7 +377,7 @@ COM_AddCommand("lb_known_maps", function(player, map)
 
 	CONS_Printf(player, "Map     Chck   Records")
 	for checksum, count in pairs(known) do
-		CONS_Printf(player, string.format("%s   %s   %d", map, checksum, count))
+		CONS_Printf(player, string.format("%s   %s   %d", G_BuildMapName(mapnum), checksum, count))
 	end
 end)