diff --git a/hw/xfree86/modes/xf86Crtc.c b/hw/xfree86/modes/xf86Crtc.c
index f072109..e1b4cfc 100644
--- a/hw/xfree86/modes/xf86Crtc.c
+++ b/hw/xfree86/modes/xf86Crtc.c
@@ -1418,7 +1418,7 @@ xf86ProbeOutputModes (ScrnInfoPtr scrn, int maxX, int maxY)
     {
 	xf86OutputPtr	    output = config->output[o];
 	DisplayModePtr	    mode;
-	DisplayModePtr	    config_modes = NULL, output_modes, default_modes;
+	DisplayModePtr	    config_modes = NULL, output_modes, default_modes = NULL;
 	char		    *preferred_mode;
 	xf86MonPtr	    edid_monitor;
 	XF86ConfMonitorPtr  conf_monitor;
@@ -1532,8 +1532,9 @@ xf86ProbeOutputModes (ScrnInfoPtr scrn, int maxX, int maxY)
 	    mon_rec.vrefresh[0].hi = 62.0;
 	    mon_rec.nVrefresh = 1;
 	}
-	default_modes = xf86GetDefaultModes (output->interlaceAllowed,
-					     output->doubleScanAllowed);
+	if (!edid_monitor)
+	    default_modes = xf86GetDefaultModes (output->interlaceAllowed,
+						 output->doubleScanAllowed);
 
 	/*
 	 * If this is not an RB monitor, remove RB modes from the default