diff --git a/sound/core/seq/oss/seq_oss_readq.c b/sound/core/seq/oss/seq_oss_readq.c
index 06b21226b4e7..d0c8cfef14de 100644
--- a/sound/core/seq/oss/seq_oss_readq.c
+++ b/sound/core/seq/oss/seq_oss_readq.c
@@ -126,7 +126,7 @@ struct readq_sysex_ctx {
 	int dev;
 };
 
-static int readq_dump_sysex(void *ptr, void *buf, int count)
+static int readq_dump_sysex(void *ptr, const void *buf, int count)
 {
 	struct readq_sysex_ctx *ctx = ptr;