diff --git a/processes/processes.tex b/processes/processes.tex
index 1fdc11b..df8ba41 100644
--- a/processes/processes.tex
+++ b/processes/processes.tex
@@ -882,7 +882,7 @@ \section{The fork-exec-wait Pattern}
 \caption{Fork, exec, wait diagram}
 \end{figure}
 
-\begin{lstlisting}[language=C][language=C]
+\begin{lstlisting}[language=C]
 #include <unistd.h>
 
 int main() {