diff --git a/drivers/video/modedb.c b/drivers/video/modedb.c
index 473562191586..d1bbef930dfa 100644
--- a/drivers/video/modedb.c
+++ b/drivers/video/modedb.c
@@ -590,6 +590,7 @@ done:
 		    "", (margins) ? " with margins" : "", (interlace) ?
 		    " interlaced" : "");
 
+	    memset(&cvt_mode, 0, sizeof(cvt_mode));
 	    cvt_mode.xres = xres;
 	    cvt_mode.yres = yres;
 	    cvt_mode.refresh = (refresh) ? refresh : 60;