diff --git a/src/tm_mad/TMScript.rb b/src/tm_mad/TMScript.rb
index c82abe8..741c085 100644
--- a/src/tm_mad/TMScript.rb
+++ b/src/tm_mad/TMScript.rb
@@ -138,6 +138,8 @@ def initialize(script_text, logger=nil)
     # Returns an array where first element tells if succeded and the
     # second one is the error message in case of failure.
     def execute(plugin)
+        return [true,""] if @lines.empty?
+        
         result=@lines.each {|line|
             res=plugin.execute(@logger, *line)
             if !res