diff --git a/lib/bdev/compress/vbdev_compress.c b/lib/bdev/compress/vbdev_compress.c
index 01e9d27af..4ce2a7018 100644
--- a/lib/bdev/compress/vbdev_compress.c
+++ b/lib/bdev/compress/vbdev_compress.c
@@ -1215,7 +1215,7 @@ vbdev_compress_claim(struct vbdev_compress *comp_bdev)
 	comp_bdev->comp_bdev.split_on_optimal_io_boundary = true;
 
 	comp_bdev->comp_bdev.blocklen = comp_bdev->base_bdev->blocklen;
-	comp_bdev->comp_bdev.blockcnt = comp_bdev->base_bdev->blockcnt;
+	comp_bdev->comp_bdev.blockcnt = comp_bdev->params.vol_size / comp_bdev->comp_bdev.blocklen;
 
 	/* This is the context that is passed to us when the bdev
 	 * layer calls in so we'll save our comp_bdev node here.