diff --git a/cpp/nth-prime/nth_prime.cpp b/cpp/nth-prime/nth_prime.cpp
index 2c62d52..89d50e2 100644
--- a/cpp/nth-prime/nth_prime.cpp
+++ b/cpp/nth-prime/nth_prime.cpp
@@ -83,7 +83,6 @@ number_t nth(size_t n, size_t sieve_size)
                 return p;
 
             next[pn] = create_next(p);
-            sieve[i] = true;
 
             process_prime(pn);
         }