diff --git a/utils.lua b/utils.lua
--- a/utils.lua
+++ b/utils.lua
@@ -55,7 +55,7 @@ EngineUtils = {
     end;
 
     getValue = function(source, param)
-        local value = nil;
+        local value;
         if (type(source) == "function") then
             value = source(param);
         else
@@ -197,7 +197,7 @@ end;
 function npc(tab)
 	if (not tab.act) then
 		tab.act = function(s)
-            local dlg = nil;      
+            local dlg;
 			if s.dlg then
                 dlg = EngineUtils.getValue(s.dlg, s);
 		    end;