-constexpr size_t kibibyte = 2 << 10;
-constexpr size_t mebibyte = (2 << 10) * kibibyte;
-constexpr size_t gibibyte = (2 << 10) * mebibyte;
+constexpr size_t kibibyte = 1 << 10;
+constexpr size_t mebibyte = (1 << 10) * kibibyte;
+constexpr size_t gibibyte = (1 << 10) * mebibyte;