diff --git a/library/LuaTools.cpp b/library/LuaTools.cpp
index 3154b5296..0ec0855ed 100644
--- a/library/LuaTools.cpp
+++ b/library/LuaTools.cpp
@@ -1757,7 +1757,7 @@ lua_State *DFHack::Lua::Open(color_ostream &out, lua_State *state)
         // reads config from .luacov or uses defaults if file doesn't exist.
         // note that luacov overrides the debug hook installed by
         // interrupt_init() above.
-        if (PushModulePublic(out, state, "luacov_helper", "init") &&
+        if (PushModulePublic(out, state, "luacov.runner", "init") &&
             SafeCall(out, state, 0, 0))
         {
             out.print("Initialized luacov coverage monitoring\n");
diff --git a/library/lua/luacov_helper.lua b/library/lua/luacov_helper.lua
index d2e24fffb..287faffe9 100644
--- a/library/lua/luacov_helper.lua
+++ b/library/lua/luacov_helper.lua
@@ -3,28 +3,13 @@
 
 local runner = require('luacov.runner')
 
-print('runner.debug_hook:', runner.debug_hook)
-
-function init()
-    runner.init()
-    print('** initializing luacov')
-    print('**   set debug hook to:', debug.gethook())
-end
-
 -- Called by LuaTools.cpp to set the debug hook for new threads. We could do
 -- this in C++, but that's complicated and scary.
 function with_luacov(f)
-    print('** wrapping function', f)
     return function(...)
-        print('** setting debug hook')
-        print('**   was:', debug.gethook())
         debug.sethook(runner.debug_hook, "l")
-        print('**   is now:', debug.gethook())
-        print('**   running function:', f)
-        print('**   params:', ...)
         return f(...)
     end
 end
 
-
 return _ENV