diff --git a/hw/xwayland/xwayland-screen.c b/hw/xwayland/xwayland-screen.c
index 778627a91..2864e7c3d 100644
--- a/hw/xwayland/xwayland-screen.c
+++ b/hw/xwayland/xwayland-screen.c
@@ -896,6 +896,10 @@ xwl_screen_validate_options(int argc, char **argv)
         else if (strcmp(argv[i], "-rootless") == 0) {
             rootless = TRUE;
         }
+        else if (strcmp(argv[i], "+iglx") == 0) {
+            ErrorF("Invalid argument, '+iglx' (indirect GLX context) is not supported\n");
+            return FALSE;
+        }
     }
 
     if (rootless && use_fixed_size) {