diff --git a/swash/processing/read_swash.py b/swash/processing/read_swash.py
index 8197bca..9ae9d29 100644
--- a/swash/processing/read_swash.py
+++ b/swash/processing/read_swash.py
@@ -1,9 +1,12 @@
+import logging
 import subprocess
 import tempfile
 
 import numpy as np
 
 
+log = logging.getLogger("read_swash")
+
 class ReadSwash:
     def __init__(self):
         self._n_x = None
@@ -13,7 +16,9 @@ class ReadSwash:
 
     @classmethod
     def read_nohead(cls, path):
+        log.info(f"Replacing \\s with \\n in '{path}'")
         subprocess.run(("sed", "-i", r"s/\s\+/\n/g", path))
+        log.info(f"Loading '{path}'")
         return np.loadtxt(path)
 
     def read_time(self, path):