diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 754c1f16ee83..acb46e1f9c0a 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -4014,6 +4014,7 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
 
 	case SND_SOC_DAPM_POST_PMD:
 		kfree(substream->runtime);
+		substream->runtime = NULL;
 		break;
 
 	default: