diff --git a/tests/engine/launch_update_mods_bug2037.lua b/tests/engine/launch_update_mods_bug2037.lua
index 2f620398..ba38c7de 100644
--- a/tests/engine/launch_update_mods_bug2037.lua
+++ b/tests/engine/launch_update_mods_bug2037.lua
@@ -125,6 +125,7 @@ local function launcher(allCurrent)
   }, RomImporter)
   ri._refreshMods = function() end
   ri._syncModUpdateInfo = function() end
+  ri._refreshFindSources = function(self) self.findSources = {} end
   return ri
 end