diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index 8c8988bfef8f..659400d40873 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -16,6 +16,7 @@
 #include <sound/asoc.h>
 
 struct device;
+struct snd_pcm_substream;
 struct snd_soc_pcm_runtime;
 struct soc_enum;