diff --git a/src/xsarsea/windspeed/other_luts.py b/src/xsarsea/windspeed/other_luts.py
index 3bee77d..33876ef 100644
--- a/src/xsarsea/windspeed/other_luts.py
+++ b/src/xsarsea/windspeed/other_luts.py
@@ -83,14 +83,14 @@ def register_cmod7(topdir):
     Parameters
     ----------
     topdir: str
-        top dir path to cmod7 luts.
+        top dir path to cmod7 lut.
 
     Examples
     --------
 
-
     Notes
     _____
+    Source : https://scatterometer.knmi.nl/cmod7
 
     See Also
     --------