diff --git a/docs/usage.rst b/docs/usage.rst
index 237a004..38c887c 100644
--- a/docs/usage.rst
+++ b/docs/usage.rst
@@ -203,7 +203,7 @@ Or if we are only interested in the majority class.
     file      start            end
     test.wav  0 days 00:00:00  0 days 00:00:03    male
               0 days 00:00:03  0 days 00:00:05    male
-    dtype: object
+    dtype: ...
 
 
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