diff --git a/code/nel/include/nel/misc/words_dictionary.h b/code/nel/include/nel/misc/words_dictionary.h
index ca10a9d62..639e36097 100644
--- a/code/nel/include/nel/misc/words_dictionary.h
+++ b/code/nel/include/nel/misc/words_dictionary.h
@@ -77,7 +77,7 @@ public:
 protected:
 
 	/// Make a result string
-	static CSString		makeResult( const CSString key, const CSString word );
+	static CSString		makeResult( const CSString &key, const CSString &word );
 
 private:
 
diff --git a/code/nel/src/misc/words_dictionary.cpp b/code/nel/src/misc/words_dictionary.cpp
index 0cdfa6382..d2468a2f7 100644
--- a/code/nel/src/misc/words_dictionary.cpp
+++ b/code/nel/src/misc/words_dictionary.cpp
@@ -247,10 +247,9 @@ void CWordsDictionary::exactLookupByKey( const CSString& key, CVectorSString& re
 /*
  * Make a result string
  */
-inline CSString CWordsDictionary::makeResult( const CSString key, const CSString word )
+inline CSString CWordsDictionary::makeResult( const CSString &key, const CSString &word )
 {
-	CSString res = key + CSString(": ") + word;
-	return res;
+	return key + CSString(": ") + word;
 }