diff --git a/tests/lsbase.py b/tests/lsbase.py
index 6684585..5f15ae4 100644
--- a/tests/lsbase.py
+++ b/tests/lsbase.py
@@ -8,7 +8,7 @@
 
 
 class LSBase:
-    """Base class of Li and Stephens tests."""
+    """Base class of tests for Li & Stephens HMM algorithms."""
 
     def verify(self, ts):
         raise NotImplementedError()