diff --git a/contents/computer_science.tex b/contents/computer_science.tex
index e275273..13c7b94 100644
--- a/contents/computer_science.tex
+++ b/contents/computer_science.tex
@@ -52,8 +52,8 @@ def fibonacci(n: int) -> int:
 
 \langsection{Exemple en C}{C example}
 \begin{lstlisting}[language=C]
-int fibonacci(const int n){
-	if (n == 0 || n == 1)
+uint64_t fibonacci(const uint64_t n){
+	if (n < 2)
 		return n;
 	return fibonacci(n - 1) + fibonacci(n - 2);
 }