1 files changed, 1 insertions, 1 deletions

diff --git a/src/functiontostring.h b/src/functiontostring.h
index 93bc20f..5e64256 100644
--- a/src/functiontostring.h
+++ b/src/functiontostring.h
@@ -11,7 +11,7 @@ public:
         FunctionToString();
         virtual ~FunctionToString();
         
-        virtual void execute( StringList &lInput, StringList &lOutput );
+        virtual void execute( const StringList &lInput, StringList &lOutput );
 
 private: