diff --git a/tex/iris.sty b/tex/iris.sty
index 7f9a448d26695528f2deabedec62b22cea2d573d..7d29b29050623c3e325f364ef7df70af0d0fe17d 100644
--- a/tex/iris.sty
+++ b/tex/iris.sty
@@ -420,7 +420,7 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 \newcommand{\unittt}{()}
-\newcommand{\unit}{1}
+\newcommand{\unitty}{1}
 
 % Agreement
 \newcommand{\agm}{\ensuremath{\textdom{Ag}}}