diff --git a/include/sessions.hpp b/include/sessions.hpp
index b445915..85c0cb9 100644
--- a/include/sessions.hpp
+++ b/include/sessions.hpp
@@ -353,7 +353,7 @@
         return authMethodsConfig;
     }
 
-    bool needsWrite()
+    bool needsWrite() const
     {
         return needWrite;
     }