diff --git a/drivers/video/mxc/mxc_ipuv3_fb.c b/drivers/video/mxc/mxc_ipuv3_fb.c
index 260b41a..e7c7801 100644
--- a/drivers/video/mxc/mxc_ipuv3_fb.c
+++ b/drivers/video/mxc/mxc_ipuv3_fb.c
@@ -664,7 +664,7 @@ static int mxcfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 		vtotal = var->yres + var->lower_margin + var->vsync_len +
 		    var->upper_margin;
 		var->pixclock = (vtotal * htotal * 6UL) / 100UL;
-		var->pixclock = KHZ2PICOS(var->pixclock);
+		if (var->pixclock) var->pixclock = KHZ2PICOS(var->pixclock);
 		dev_dbg(info->device,
 			"pixclock set for 60Hz refresh = %u ps\n",
 			var->pixclock);