diff --git a/pres.tex b/pres.tex
index bb69d22..7c6398a 100644
--- a/pres.tex
+++ b/pres.tex
@@ -375,7 +375,7 @@
     \frametitle{Faithfulness}
     \centering
     % Books faithfulness
-    \includegraphics[height=0.35\textheight]{graphics/books_dt_lr.png}
+    \includegraphics[height=0.35\textheight]{graphics/books_dt_lr.png}{ }
     % Dvds faithfulness
     \includegraphics[height=0.35\textheight]{graphics/dvds_dt_lr.png}