diff --git a/inst/WORDLIST b/inst/WORDLIST
index e8a7c26a..4f221654 100644
--- a/inst/WORDLIST
+++ b/inst/WORDLIST
@@ -35,6 +35,7 @@ autoregressions
 backtransformations
 backtransforming
 com
+df
 dfrac
 fabletools
 forecTheta