diff --git a/man/modeldf.Rd b/man/modeldf.Rd
index 93da0490..f6c14c19 100644
--- a/man/modeldf.Rd
+++ b/man/modeldf.Rd
@@ -8,6 +8,8 @@ modeldf(object, ...)
 }
 \arguments{
 \item{object}{A time series model}
+
+\item{...}{Other arguments currently ignored}
 }
 \description{
 Compute model degrees of freedom