diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index f1004259c3d368..8818ed5c390faa 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -37,7 +37,7 @@
 #include "file-item.h"
 #include "super.h"
 
-struct bio_set btrfs_compressed_bioset;
+static struct bio_set btrfs_compressed_bioset;
 
 static const char* const btrfs_compress_types[] = { "", "zlib", "lzo", "zstd" };