diff --git a/sound/soc/codecs/wm8993.c b/sound/soc/codecs/wm8993.c
index 2b40c93601ed493a11bf0222dd5ba0c09754355b..7c7fd925db8da78c1ad6bb08bdde66eb60d7210b 100644
--- a/sound/soc/codecs/wm8993.c
+++ b/sound/soc/codecs/wm8993.c
@@ -444,6 +444,12 @@ static int _wm8993_set_fll(struct snd_soc_codec *codec, int fll_id, int source,
 	/* Enable the FLL */
 	snd_soc_write(codec, WM8993_FLL_CONTROL_1, reg1 | WM8993_FLL_ENA);
 
+	/* Both overestimates */
+	if (Fref < 1000000)
+		msleep(3);
+	else
+		msleep(1);
+
 	dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout);
 
 	wm8993->fll_fref = Fref;