diff --git a/include/cppuddle/kernel_aggregation/detail/aggregation_executors_and_allocators.hpp b/include/cppuddle/kernel_aggregation/detail/aggregation_executors_and_allocators.hpp
index 93bd6dd4..2cd151d6 100644
--- a/include/cppuddle/kernel_aggregation/detail/aggregation_executors_and_allocators.hpp
+++ b/include/cppuddle/kernel_aggregation/detail/aggregation_executors_and_allocators.hpp
@@ -431,7 +431,7 @@ template <typename Executor> class aggregated_executor {
   public:
     /// How many slices are there overall - required to check the launch
     /// criteria
-    const size_t number_slices;
+    size_t number_slices;
     size_t max_slices;
     size_t id;
     using executor_t = Executor;