diff --git a/src/common/swap.h b/src/common/swap.h
index 295c65993..fc7af4280 100644
--- a/src/common/swap.h
+++ b/src/common/swap.h
@@ -177,7 +177,7 @@ protected:
     }
 
 public:
-    T const swap() const {
+    T swap() const {
         return swap(value);
     }
     swap_struct_t() = default;