1 files changed, 1 insertions, 1 deletions

diff --git a/src/optparser.h b/src/optparser.h
index aacafc3..2936a4b 100644
--- a/src/optparser.h
+++ b/src/optparser.h
@@ -182,7 +182,7 @@ namespace Bu
                  * been handled by an option, and isn't an option (starts with - or --).
                  * To change this behaviour call 
                  */
-                virtual void optionError( const Bu::FString sOption );
+                virtual void optionError( const Bu::FString &sOption );
 
                 void setNonOption( OptionSignal sSignal );