diff --git a/chapters/01_introduction.tex b/chapters/01_introduction.tex
index a49d4818..80a180df 100644
--- a/chapters/01_introduction.tex
+++ b/chapters/01_introduction.tex
@@ -76,9 +76,9 @@ \subsection{Subsection}
         xlabel=X
       ]
       \addplot table[x=a, y=b]{\exampleA};
-      \addlegendentry{Example A};
+      \addlegendentry{Example A}
       \addplot table[x=a, y=b]{\exampleB};
-      \addlegendentry{Example B};
+      \addlegendentry{Example B}
     \end{axis}
   \end{tikzpicture}
   \caption[Example plot]{An example for a simple plot.}\label{fig:sample-plot}