diff --git a/apps/qsort.cpp b/apps/qsort.cpp
index 8fa25ac192817f212b36199d5b2bb388e8408f87..9831dff46e4d43e0c8d43416c7a3016d5d608135 100644
--- a/apps/qsort.cpp
+++ b/apps/qsort.cpp
@@ -91,7 +91,7 @@ static void qsort(int* arr, size_t s) {
 	cps.wait();
 }
 
-static const size_t ARR_SIZE = 10 * 1000 * 1000;
+static const size_t ARR_SIZE = 10L * 1000 * 1000;
 
 auto main() -> int {
 	int* arr = new int[ARR_SIZE];