diff --git a/doc/dynare.texi b/doc/dynare.texi
index e640f7b8ea62b949b9962ad4bafc9c770f302894..493e9a6a827501e9919916f43cb06f6050a7d0aa 100644
--- a/doc/dynare.texi
+++ b/doc/dynare.texi
@@ -4425,7 +4425,7 @@ The number of the first observation to be used. Default: @code{1}
 @item prefilter = @var{INTEGER}
 @anchor{prefilter}
 A value of @code{1} means that the estimation procedure will demean
-the data. Default: @code{0}, @i{i.e.} no prefiltering
+each data series by its empirical mean. Default: @code{0}, @i{i.e.} no prefiltering
 
 @item presample = @var{INTEGER}
 @anchor{presample}