diff --git a/hw/xwayland/xwayland-glx.c b/hw/xwayland/xwayland-glx.c
index 4fd3e6905..7e2a87fc1 100644
--- a/hw/xwayland/xwayland-glx.c
+++ b/hw/xwayland/xwayland-glx.c
@@ -378,6 +378,9 @@ egl_screen_probe(ScreenPtr pScreen)
         return NULL;
     }
 
+    if (!screen->base.glvnd)
+        screen->base.glvnd = strdup("mesa");
+
     __glXScreenInit(base, pScreen);
     __glXsetGetProcAddress(eglGetProcAddress);