diff --git a/src/libCom/cxxTemplates/tsDLList.h b/src/libCom/cxxTemplates/tsDLList.h
index 33c2578be..ac1539497 100644
--- a/src/libCom/cxxTemplates/tsDLList.h
+++ b/src/libCom/cxxTemplates/tsDLList.h
@@ -760,7 +760,7 @@ inline tsDLIterConstBD<T> tsDLIterConstBD<T>::operator -- (int)
 }
 
 template <class T>
-inline const tsDLIterBD<T> tsDLIterBD<T>::valid ()
+inline bool tsDLIterBD<T>::valid () const
 {
     return this->pEntry ? true : false;
 }
@@ -889,7 +889,7 @@ inline tsDLIterBD<T> tsDLIterBD<T>::operator -- (int)
 }
 
 template <class T>
-inline const tsDLIterBD<T> tsDLIterBD<T>::valid ()
+inline bool tsDLIterBD<T>::valid () const
 {
     return this->tsDLIterConstBD<T>::valid ();
 }