diff --git a/peyote/detector.py b/peyote/detector.py
index 66138be017fce7f3b1c2e84291b97511b303c7ab..bd63aabdbc9dfe30abb2f4729cbefeaf5a5af6b2 100644
--- a/peyote/detector.py
+++ b/peyote/detector.py
@@ -82,7 +82,7 @@ class Interferometer:
         Adds the requested signal to self.data
 
         :param source: source type
-        :param params: parameters
+
         """
         signal = source.frequency_domain_strain()