diff --git a/eratosthenes.md b/eratosthenes.md
index 9d409d9..31a1db4 100644
--- a/eratosthenes.md
+++ b/eratosthenes.md
@@ -86,7 +86,7 @@ int d[n+1];
 vector<int> p;
  
 for (int k = 2; k <= n; k++) {
-	if (p[k] == 0) {
+	if (d[k] == 0) {
 		d[k] = k;
 		p.push_back(k);
 	}