diff --git a/include/condy/cqe_handler.hpp b/include/condy/cqe_handler.hpp
index 13f64a9e..053c6fa1 100644
--- a/include/condy/cqe_handler.hpp
+++ b/include/condy/cqe_handler.hpp
@@ -17,25 +17,6 @@
 
 namespace condy {
 
-namespace detail {
-
-// Just for debugging, check if the CQE is big as expected
-inline bool check_cqe32([[maybe_unused]] io_uring_cqe *cqe) {
-    auto &ring = detail::Context::current().runtime()->ring_internal();
-    auto ring_flags = ring.ring()->flags;
-    if (ring_flags & IORING_SETUP_CQE32) {
-        return true;
-    }
-#if !IO_URING_CHECK_VERSION(2, 13) // >= 2.13
-    if (ring_flags & IORING_SETUP_CQE_MIXED) {
-        return cqe->flags & IORING_CQE_F_32;
-    }
-#endif
-    return false;
-}
-
-} // namespace detail
-
 /**
  * @brief A simple CQE handler that extracts the result from the CQE without any
  * additional processing.
@@ -76,8 +57,10 @@ class SelectBufferCQEHandler {
  */
 struct NVMePassthruCQEHandler {
     std::pair<int32_t, uint64_t> operator()(io_uring_cqe *cqe) noexcept {
-        assert(detail::check_cqe32(cqe) &&
-               "Expected big CQE for NVMe passthrough");
+        assert(
+            detail::Context::current().runtime()->ring_internal().check_cqe32(
+                cqe) &&
+            "Expected big CQE for NVMe passthrough");
         return {cqe->res, cqe->big_cqe[0]};
     }
 };
@@ -114,8 +97,10 @@ struct TxTimestampResult {
 struct TxTimestampCQEHandler {
     std::pair<int32_t, TxTimestampResult>
     operator()(io_uring_cqe *cqe) noexcept {
-        assert(detail::check_cqe32(cqe) &&
-               "Expected big CQE for TX timestamp operations");
+        assert(
+            detail::Context::current().runtime()->ring_internal().check_cqe32(
+                cqe) &&
+            "Expected big CQE for TX timestamp operations");
         TxTimestampResult result;
         result.tstype =
             static_cast<int>(cqe->flags >> IORING_TIMESTAMP_TYPE_SHIFT);
diff --git a/include/condy/detail/ring.hpp b/include/condy/detail/ring.hpp
index a891b34c..2ab45876 100644
--- a/include/condy/detail/ring.hpp
+++ b/include/condy/detail/ring.hpp
@@ -133,6 +133,19 @@ class Ring {
     }
 #endif
 
+    bool check_cqe32([[maybe_unused]] io_uring_cqe *cqe) const noexcept {
+        auto ring_flags = ring_.flags;
+        if (ring_flags & IORING_SETUP_CQE32) {
+            return true;
+        }
+#if !IO_URING_CHECK_VERSION(2, 13) // >= 2.13
+        if (ring_flags & IORING_SETUP_CQE_MIXED) {
+            return cqe->flags & IORING_CQE_F_32;
+        }
+#endif
+        return false;
+    }
+
 private:
     template <io_uring_sqe *(*get_sqe)(struct io_uring *)>
     io_uring_sqe *get_sqe_() noexcept {
diff --git a/include/condy/detail/task.hpp b/include/condy/detail/task.hpp
index a795b555..23fc3a47 100644
--- a/include/condy/detail/task.hpp
+++ b/include/condy/detail/task.hpp
@@ -181,5 +181,18 @@ inline auto TaskBase<T, Allocator>::operator co_await() noexcept {
                                      Context::current().runtime());
 }
 
+struct [[nodiscard]] SwitchAwaiter {
+    bool await_ready() const noexcept { return false; }
+
+    template <typename PromiseType>
+    void await_suspend(std::coroutine_handle<PromiseType> handle) noexcept {
+        runtime_->schedule_internal(&handle.promise());
+    }
+
+    void await_resume() const noexcept {}
+
+    Runtime *runtime_;
+};
+
 } // namespace detail
 } // namespace condy
\ No newline at end of file
diff --git a/include/condy/task.hpp b/include/condy/task.hpp
index 79d82a9d..273e697b 100644
--- a/include/condy/task.hpp
+++ b/include/condy/task.hpp
@@ -125,23 +125,6 @@ inline Task<T, Allocator> co_spawn(Coro<T, Allocator> coro) {
     return co_spawn(*runtime, std::move(coro));
 }
 
-namespace detail {
-
-struct [[nodiscard]] SwitchAwaiter {
-    bool await_ready() const noexcept { return false; }
-
-    template <typename PromiseType>
-    void await_suspend(std::coroutine_handle<PromiseType> handle) noexcept {
-        runtime_->schedule_internal(&handle.promise());
-    }
-
-    void await_resume() const noexcept {}
-
-    Runtime *runtime_;
-};
-
-} // namespace detail
-
 /**
  * @brief Switch current coroutine task to the given runtime.
  * @param runtime The runtime to switch to.
diff --git a/include/condy/zcrx.hpp b/include/condy/zcrx.hpp
index ba018463..9768fde7 100644
--- a/include/condy/zcrx.hpp
+++ b/include/condy/zcrx.hpp
@@ -2,6 +2,7 @@
 
 #include "condy/detail/buffers.hpp"
 #include "condy/detail/context.hpp"
+#include "condy/detail/ring.hpp"
 #include "condy/detail/utils.hpp"
 #include "condy/runtime.hpp"
 #include <bit>
@@ -190,6 +191,8 @@ class ZeroCopyRxBufferPool {
     uint32_t zcrx_id() const noexcept { return zcrx_id_; }
 
     ZeroCopyRxBuffer handle_finish(io_uring_cqe *cqe) noexcept {
+        assert(ring_->check_cqe32(cqe) && "Expected big CQE for ZeroCopyRx");
+
         if (cqe->res < 0) {
             return ZeroCopyRxBuffer();
         }