diff --git a/tuos-poster/tuos-poster.cls b/tuos-poster/tuos-poster.cls
index fd92eb9..1585825 100644
--- a/tuos-poster/tuos-poster.cls
+++ b/tuos-poster/tuos-poster.cls
@@ -15,4 +15,5 @@
 \LoadClassWithOptions{beamer}[]
 \ProcessOptions\relax
 \usetheme{tuos-poster}
+\usepackage{beamerposter}
 \endinput