1 files changed, 1 insertions, 1 deletions

diff --git a/src/function.h b/src/function.h
index c840922..1a71f8a 100644
--- a/src/function.h
+++ b/src/function.h
@@ -11,7 +11,7 @@ public:
         virtual ~Function();
 
         void addParam( const char *str );
-        virtual void execute( StringList &lInput, StringList &lOutput )=0;
+        virtual void execute( const StringList &lInput, StringList &lOutput )=0;
 
 private:
         StringList lParams;