diff --git a/swash/processing/sws_npz.py b/swash/processing/sws_npz.py
index 3ac451b..b8c7e1e 100644
--- a/swash/processing/sws_npz.py
+++ b/swash/processing/sws_npz.py
@@ -28,9 +28,10 @@ bathy = pd.read_hdf(data_out.joinpath("bathy.h5"), "bathy")
 n_x = bathy.index.size
 
 log.info(f"Reading swash output from '{sws_out}'")
-botl = read_nohead_scalar(sws_out.joinpath("botl.dat"), n_x)
+botl = read_nohead_scalar(sws_out.joinpath("botl.dat"), n_x)[0, :]
 dep = np.maximum(0, read_nohead_scalar(sws_out.joinpath("dep.dat"), n_x))
 vel = read_nohead_vect(sws_out.joinpath("vel.dat"), n_x)
 
+log.info(f"Writing npz file in '{inp}'")
 inp.mkdir(exist_ok=True)
 np.savez_compressed(inp.joinpath("sws"), botl=botl, dep=dep, vel=vel)