diff --git a/ex08/kn08.pdf b/ex08/kn08.pdf
index 5ad19db..23fd31b 100644
--- a/ex08/kn08.pdf
+++ b/ex08/kn08.pdf
Binary files differ
diff --git a/ex08/kn08.tex b/ex08/kn08.tex
index 3804d9c..f1f8900 100644
--- a/ex08/kn08.tex
+++ b/ex08/kn08.tex
@@ -256,9 +256,9 @@
         &24 bit &\le& n\cdot \left(1bit+ \frac{20m}{\frac{2}{3}\cdot 3\cdot 10^8 \frac{m}{s}}\cdot 4Mbit/s\right)\\
         \Leftrightarrow & 24 bit &\le & n\cdot 1.4 bit\\
         \Leftrightarrow &\frac{24}{1.4} & \leq & n\\
-        \Rightarrow & 18 &\leq& n
+        \overset{n\in\mathds{N}}{\Rightarrow} & 18 &\leq& n
     \end{align*}
-    $\Rightarrow$ We need at least 18 Stations to let the whole token circulate.
+    $\Rightarrow$ We need at least 18 stations to let the whole token circulate.
 \end{enumerate}
 \Aufgabe{Ethernet}{5+5+5+5+5+5}
 \begin{enumerate}