diff --git a/doc/manual/source/time-series.rst b/doc/manual/source/time-series.rst
index 79c61907fd485b99c6f4295f31da577efc0016f2..375dea32300e3a825cbef6c28160f87a06019b86 100644
--- a/doc/manual/source/time-series.rst
+++ b/doc/manual/source/time-series.rst
@@ -1519,7 +1519,7 @@ The dseries class
 
 
     .. dseriesmethod:: B = detrend (A, m)
-                       dentrend_ (A, m)
+                       detrend_ (A, m)
 
         |br| Detrends ``dseries`` object ``A`` with a fitted
         polynomial of order ``m``. Note that each variable is