diff --git a/hw/vfb/InitOutput.c b/hw/vfb/InitOutput.c
index 2f0f4f07d..f36752fc1 100644
--- a/hw/vfb/InitOutput.c
+++ b/hw/vfb/InitOutput.c
@@ -833,6 +833,9 @@ vfbRandRInit(ScreenPtr pScreen)
     if (!crtc)
        return FALSE;
 
+    /* This is to avoid xrandr to complain about the gamma missing */
+    RRCrtcGammaSetSize (crtc, 256);
+
     output = RROutputCreate (pScreen, "screen", 6, NULL);
     if (!output)
        return FALSE;