diff --git a/examples/images/real-number-line.tex b/examples/images/real-number-line.tex
@@ -9,6 +9,6 @@
\draw[shift={(\x,0)}] (0pt,0pt) -- (0pt,-3pt) node[below]{$\x$};
% A real number x between 0 and 1
- \draw[shift={(0.6,0)}] (0pt,6pt) -- (0pt,-6pt) node[below]{$x$};
+ \draw[shift={(0.6,0)}] (0pt,6pt) -- (0pt,-6pt) node[below]{$t$};
\end{tikzpicture}