diff --git a/src/protocols/vnc/user.c b/src/protocols/vnc/user.c
index 7e123732..b036785f 100644
--- a/src/protocols/vnc/user.c
+++ b/src/protocols/vnc/user.c
@@ -112,8 +112,10 @@ int guac_vnc_user_leave_handler(guac_user* user) {
 
     guac_vnc_client* vnc_client = (guac_vnc_client*) user->client->data;
 
-    /* Update shared cursor state */
-    guac_common_cursor_remove_user(vnc_client->display->cursor, user);
+    if (vnc_client && vnc_client->display && vnc_client->display->cursor) {
+        /* Update shared cursor state */
+        guac_common_cursor_remove_user(vnc_client->display->cursor, user);
+    }
 
     /* Free settings if not owner (owner settings will be freed with client) */
     if (!user->owner) {