1 files changed, 1 insertions, 1 deletions
diff --git a/src/saxparser.h b/src/saxparser.h
index c303d41..b027b30 100644
--- a/src/saxparser.h
+++ b/src/saxparser.h
@@ -67,7 +67,7 @@ public:
    * In that cae it might be nessecary to buffer to received bytes.
    * @param data A std::string containing the character data.
    */
-  virtual void characterData(std::string &data);
+  virtual void characterData(const std::string &data);
 
   /**
    * Start tag callback mehtod.