diff --git a/slides/BDA_lecture_7.pdf b/slides/BDA_lecture_7.pdf
index 61aa1662..f7a296d1 100644
Binary files a/slides/BDA_lecture_7.pdf and b/slides/BDA_lecture_7.pdf differ
diff --git a/slides/BDA_lecture_7.tex b/slides/BDA_lecture_7.tex
index 56d8a56b..1631b688 100644
--- a/slides/BDA_lecture_7.tex
+++ b/slides/BDA_lecture_7.tex
@@ -1519,7 +1519,7 @@
 
   \vspace{-0.75\baselineskip}
 \begin{minted}[fontsize=\footnotesize]{r}
-fit_lin <- brm(temp ~ year, data = data_lin, family = gaussian())
+fit_lin <- brm(temp ~ year, data = data_lin)
 \end{minted}
 \pause
 \begin{minted}[fontsize=\scriptsize,highlightlines={5,6,11,16,21}]{r}
@@ -1549,6 +1549,18 @@
 
 \end{frame}
 
+\begin{frame}[fragile,fragile]{brms covariate centering by default}
+
+  Sometimes we want to turn off the covariate centering, which can be
+  done with additional argument for brms formula function
+  \rinline/bf()/
+
+\begin{minted}[fontsize=\footnotesize]{r}
+fit_lin <- brm(bf(temp ~ year, center=FALSE), data = data_lin)
+\end{minted}
+
+\end{frame}
+
 \begin{frame}[fragile]{brms formulas}
 
   \begin{tabular}[t]{lll}