diff --git a/include/wx/list.h b/include/wx/list.h
index c17823a71b..ab36a45db2 100644
--- a/include/wx/list.h
+++ b/include/wx/list.h
@@ -862,7 +862,7 @@ private:
             while (n < size())                                              \
                 pop_back();                                                 \
             while (n > size())                                              \
-                push_back();                                                \
+                push_back(v);                                                \
         }                                                                   \
         size_type size() const { return GetCount(); }                       \
         size_type max_size() const { return INT_MAX; }                      \