diff --git a/slides.tex b/slides.tex
index 8417e12..095cd48 100644
--- a/slides.tex
+++ b/slides.tex
@@ -185,11 +185,16 @@ Segmentation fault.
                 \textbf{\Large How does it work?}
             \end{center}
         \end{column}
+        \hfill
         \begin{column}{0.35\textwidth}
-            \pause{}
-            \includegraphics[width=0.95\linewidth]{img/call_stack}
         \end{column}
     \end{columns}
+
+    \only<4->{
+        \begin{textblock*}{0.35\textwidth}[1,0.5](0.9\paperwidth,0.5\paperheight)%
+            \includegraphics[width=0.95\linewidth]{img/call_stack}
+        \end{textblock*}
+    }
 \end{frame}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -197,7 +202,7 @@ Segmentation fault.
 
 \begin{frame}
     \begin{columns}[c]
-        \begin{column}{0.65\textwidth}
+        \begin{column}{0.55\textwidth}
             \begin{center}
                 \large\bf
                 How do we get\\
@@ -209,10 +214,14 @@ Segmentation fault.
 
             \end{center}
         \end{column}
+        \hfill
         \begin{column}{0.35\textwidth}
-            \includegraphics[width=0.95\linewidth]{img/call_stack}
         \end{column}
     \end{columns}
+
+    \begin{textblock*}{0.35\textwidth}[1,0.5](0.9\paperwidth,0.5\paperheight)%
+        \includegraphics[width=0.95\linewidth]{img/call_stack}
+    \end{textblock*}
 \end{frame}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%