diff --git a/modules/beast_core/containers/beast_OwnedArray.h b/modules/beast_core/containers/beast_OwnedArray.h
index ecbea526fc..e63ff92719 100644
--- a/modules/beast_core/containers/beast_OwnedArray.h
+++ b/modules/beast_core/containers/beast_OwnedArray.h
@@ -342,7 +342,7 @@ public:
 
         @param newObject   the new object to add to the array
     */
-    void addIfNotAlreadyThere (const ObjectClass* const newObject) noexcept
+    void addIfNotAlreadyThere (ObjectClass* const newObject) noexcept
     {
         const ScopedLockType lock (getLock());