diff --git a/src/mrw/auto.hxx b/src/mrw/auto.hxx
index 3cc210a..f7834a9 100644
--- a/src/mrw/auto.hxx
+++ b/src/mrw/auto.hxx
@@ -97,7 +97,7 @@ namespace mrw {
            typename FUNCTION_PTR,
            FUNCTION_PTR FREE_FUNCTION,
            typename INITIAL_VALUE_TYPE = RESOURCE_TYPE,
-      INITIAL_VALUE_TYPE INITIAL_VALUE = INITIAL_VALUE_TYPE(0),
+      INITIAL_VALUE_TYPE INITIAL_VALUE = 0,
            typename FREE_TYPE = RESOURCE_TYPE>
   class AutoResource {
     public: