diff --git a/maxutils/maxbase/include/maxbase/worker.hh b/maxutils/maxbase/include/maxbase/worker.hh
index 7ad49a5bb..5412bf4f8 100644
--- a/maxutils/maxbase/include/maxbase/worker.hh
+++ b/maxutils/maxbase/include/maxbase/worker.hh
@@ -41,17 +41,18 @@ struct WORKER_STATISTICS
         N_QUEUE_TIMES = 30
     };
 
-    int64_t n_read = 0;         /*< Number of read events   */
-    int64_t n_write = 0;        /*< Number of write events  */
-    int64_t n_error = 0;        /*< Number of error events  */
-    int64_t n_hup = 0;          /*< Number of hangup events */
-    int64_t n_accept = 0;       /*< Number of accept events */
-    int64_t n_polls = 0;        /*< Number of poll cycles   */
-    int64_t n_pollev = 0;       /*< Number of polls returning events */
-    int64_t evq_avg = 0;        /*< Average event queue length */
-    int64_t evq_max = 0;        /*< Maximum event queue length */
-    int64_t                                 maxqtime = 0;
-    int64_t                                 maxexectime = 0;
+    int64_t n_read = 0;     /*< Number of read events   */
+    int64_t n_write = 0;    /*< Number of write events  */
+    int64_t n_error = 0;    /*< Number of error events  */
+    int64_t n_hup = 0;      /*< Number of hangup events */
+    int64_t n_accept = 0;   /*< Number of accept events */
+    int64_t n_polls = 0;    /*< Number of poll cycles   */
+    int64_t n_pollev = 0;   /*< Number of polls returning events */
+    int64_t evq_avg = 0;    /*< Average event queue length */
+    int64_t evq_max = 0;    /*< Maximum event queue length */
+    int64_t maxqtime = 0;
+    int64_t maxexectime = 0;
+
     std::array<int64_t, MAXNFDS>            n_fds {};   /*< Number of wakeups with particular n_fds value */
     std::array<uint32_t, N_QUEUE_TIMES + 1> qtimes {};
     std::array<uint32_t, N_QUEUE_TIMES + 1> exectimes {};
diff --git a/maxutils/maxbase/src/worker.cc b/maxutils/maxbase/src/worker.cc
index 64922e427..5c6cb2172 100644
--- a/maxutils/maxbase/src/worker.cc
+++ b/maxutils/maxbase/src/worker.cc
@@ -111,7 +111,7 @@ uint64_t WorkerLoad::get_time_ms()
     int rv = clock_gettime(CLOCK_MONOTONIC_COARSE, &t);
     if (rv != 0)
     {
-        mxb_assert(errno == EINVAL); // CLOCK_MONOTONIC_COARSE not supported.
+        mxb_assert(errno == EINVAL);    // CLOCK_MONOTONIC_COARSE not supported.
         rv = clock_gettime(CLOCK_MONOTONIC, &t);
         mxb_assert(rv == 0);
     }
@@ -519,9 +519,19 @@ bool Worker::call(function<void ()> func, execute_mode_t mode)
 bool Worker::post_message(uint32_t msg_id, intptr_t arg1, intptr_t arg2)
 {
     // NOTE: No logging here, this function must be signal safe.
-    MessageQueue::Message message(msg_id, arg1, arg2);
+    bool rval = false;
 
-    return m_pQueue->post(message);
+    // TODO: Enable and fix this in develop and/or 2.4: The deletion of rworker_local is done after the
+    // workers have stopped and it triggers this assertion.
+    // mxb_assert(state() != Worker::STOPPED);
+
+    if (state() != Worker::STOPPED)
+    {
+        MessageQueue::Message message(msg_id, arg1, arg2);
+        rval = m_pQueue->post(message);
+    }
+
+    return rval;
 }
 
 void Worker::run(mxb::Semaphore* pSem)
diff --git a/server/core/admin.cc b/server/core/admin.cc
index 16431f249..a00d97fd9 100644
--- a/server/core/admin.cc
+++ b/server/core/admin.cc
@@ -424,6 +424,7 @@ bool mxs_admin_init()
 void mxs_admin_shutdown()
 {
     MHD_stop_daemon(http_daemon);
+    MXS_NOTICE("Stopped MaxScale REST API");
 }
 
 bool mxs_admin_https_enabled()
diff --git a/server/core/gateway.cc b/server/core/gateway.cc
index 07bd72ed4..7700b7a85 100644
--- a/server/core/gateway.cc
+++ b/server/core/gateway.cc
@@ -2255,9 +2255,6 @@ int main(int argc, char** argv)
     mxb_assert(worker);
     worker->run();
 
-    /** Stop administrative interface */
-    mxs_admin_shutdown();
-
     /*< Stop all monitors */
     monitor_stop_all();
 
diff --git a/server/core/misc.cc b/server/core/misc.cc
index 2098ad95c..a1476e389 100644
--- a/server/core/misc.cc
+++ b/server/core/misc.cc
@@ -19,6 +19,7 @@
 
 #include "internal/maxscale.h"
 #include "internal/service.hh"
+#include "internal/admin.hh"
 
 static time_t started;
 
@@ -50,7 +51,12 @@ int maxscale_shutdown()
 
     if (n == 0)
     {
-        mxs::RoutingWorker::shutdown_all();
+        auto w = mxs::RoutingWorker::get(mxs::RoutingWorker::MAIN);
+        w->execute(
+            []() {
+                mxs_admin_shutdown();
+                mxs::RoutingWorker::shutdown_all();
+            }, nullptr, mxs::RoutingWorker::EXECUTE_QUEUED);
     }
 
     return n + 1;