diff --git a/server/display-channel.c b/server/display-channel.c
index d212d803..c721057a 100644
--- a/server/display-channel.c
+++ b/server/display-channel.c
@@ -189,7 +189,7 @@ static void monitors_config_debug(MonitorsConfig *mc)
     }
 }
 
-static MonitorsConfig* monitors_config_new(QXLHead *heads, ssize_t nheads, ssize_t max)
+static MonitorsConfig* monitors_config_new(const QXLHead *heads, ssize_t nheads, ssize_t max)
 {
     MonitorsConfig *mc;
 
@@ -2453,7 +2453,7 @@ void display_channel_push_monitors_config(DisplayChannel *display)
 }
 
 void display_channel_update_monitors_config(DisplayChannel *display,
-                                            QXLMonitorsConfig *config,
+                                            const QXLMonitorsConfig *config,
                                             uint16_t count, uint16_t max_allowed)
 {
 
diff --git a/server/display-channel.h b/server/display-channel.h
index 2e0c1140..a4549bc7 100644
--- a/server/display-channel.h
+++ b/server/display-channel.h
@@ -145,7 +145,7 @@ void                       display_channel_gl_draw                   (DisplayCha
                                                                       SpiceMsgDisplayGlDraw *draw);
 void                       display_channel_gl_draw_done              (DisplayChannel *display);
 
-void display_channel_update_monitors_config(DisplayChannel *display, QXLMonitorsConfig *config,
+void display_channel_update_monitors_config(DisplayChannel *display, const QXLMonitorsConfig *config,
                                             uint16_t count, uint16_t max_allowed);
 void display_channel_set_monitors_config_to_primary(DisplayChannel *display);
 void display_channel_push_monitors_config(DisplayChannel *display);
diff --git a/server/red-worker.c b/server/red-worker.c
index 1cb240d5..1d9c9055 100644
--- a/server/red-worker.c
+++ b/server/red-worker.c
@@ -637,7 +637,7 @@ static void handle_dev_monitors_config_async(void *opaque, void *payload)
     RedWorkerMessageMonitorsConfigAsync *msg = payload;
     RedWorker *worker = opaque;
     uint16_t count, max_allowed;
-    QXLMonitorsConfig *dev_monitors_config =
+    const QXLMonitorsConfig *dev_monitors_config =
         (QXLMonitorsConfig*)memslot_get_virt(&worker->mem_slots, msg->monitors_config,
                                              qxl_monitors_config_size(1),
                                              msg->group_id);