diff --git a/week2_algorithmic_warmup/1_fibonacci_number/fibonacci.cpp b/week2_algorithmic_warmup/1_fibonacci_number/fibonacci.cpp
index 03adb20..fac1655 100644
--- a/week2_algorithmic_warmup/1_fibonacci_number/fibonacci.cpp
+++ b/week2_algorithmic_warmup/1_fibonacci_number/fibonacci.cpp
@@ -38,5 +38,5 @@ int main()
     int n = 0;
     std::cin >> n;
     std::cout << fibonacci_fast(n) << '\n';
-    return 0;
+    return 1;
 }