diff --git a/array/sarray.hpp b/array/sarray.hpp
index fe7ae267..52f6bfc8 100644
--- a/array/sarray.hpp
+++ b/array/sarray.hpp
@@ -95,6 +95,6 @@ namespace cruft {
             T objects[S];
         } m_data;
 
-        const std::size_t m_size;
+        std::size_t m_size;
     };
 }