2 files changed, 2 insertions, 2 deletions
diff --git a/src/pcm_volume.c b/src/pcm_volume.c
index 7d9d2fe42..dd5f6f90c 100644
--- a/src/pcm_volume.c
+++ b/src/pcm_volume.c
@@ -138,7 +138,7 @@ pcm_volume_change_32(int32_t *buffer, unsigned num_samples, int volume)
 }
 
 bool
-pcm_volume(void *buffer, int length,
+pcm_volume(void *buffer, size_t length,
 	   enum sample_format format,
 	   int volume)
 {
diff --git a/src/pcm_volume.h b/src/pcm_volume.h
index 3fd722e77..741c4db40 100644
--- a/src/pcm_volume.h
+++ b/src/pcm_volume.h
@@ -68,7 +68,7 @@ pcm_volume_dither(void)
  * @return true on success, false if the audio format is not supported
  */
 bool
-pcm_volume(void *buffer, int length,
+pcm_volume(void *buffer, size_t length,
 	   enum sample_format format,
 	   int volume);