diff --git a/docs/chapter_computational_complexity/space_complexity.md b/docs/chapter_computational_complexity/space_complexity.md
index 232a96517..725c26919 100755
--- a/docs/chapter_computational_complexity/space_complexity.md
+++ b/docs/chapter_computational_complexity/space_complexity.md
@@ -369,7 +369,7 @@
         int a = 0;               // O(1)
         int b[10000];            // O(1)
         if (n > 10)
-            vector<int> nums(n); // O(n)
+            int nums[n] = {0};   // O(n)
     }
     ```