diff --git a/src/app/Dictionary.h b/src/app/Dictionary.h
index c72cd0e..06d87c1 100644
--- a/src/app/Dictionary.h
+++ b/src/app/Dictionary.h
@@ -34,7 +34,7 @@ namespace DictionaryHelper
           strcpy(_string, Object._string);
         }
         ~StringEntity(){free(_string);}
-        const char *getString(){return _string;}
+        const char *getString() const {return _string;}
         void setString(const char *string = NULL)
         {
           free(_string);_string = NULL;