diff --git a/mods/liquid_security/init.lua b/mods/liquid_security/init.lua
index 101ed0b..4c1cbc5 100755
--- a/mods/liquid_security/init.lua
+++ b/mods/liquid_security/init.lua
@@ -6,7 +6,7 @@ local timers = {}
 
 file = io.open(minetest.get_worldpath() .. "/liquid_security.dat", "r")
 if file then
-	timers = minetest.deserialize(file:read()) or {}
+	timers = minetest.deserialize(file:read() or "") or {}
 end
 
 minetest.register_on_newplayer(function(player)
diff --git a/mods/mysql_auth b/mods/mysql_auth
index 79699b5..67dc261 160000
--- a/mods/mysql_auth
+++ b/mods/mysql_auth
@@ -1 +1 @@
-Subproject commit 79699b500cf0080ce281d218361dd49a1c3a8aa2
+Subproject commit 67dc261bd0e9679b01bae1854218cb442724b979