diff --git a/src/pool.c b/src/pool.c
index 2f06210..17ea61a 100644
--- a/src/pool.c
+++ b/src/pool.c
@@ -78,7 +78,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define CLIENT_JOBS_MAX 4
 #define BLOCK_HEADERS_MAX 4
 #define BLOCK_TEMPLATES_MAX 4
-#define MAINNET_ADDRESS_PREFIX 18
+#define MAINNET_ADDRESS_PREFIX 4146
 #define TESTNET_ADDRESS_PREFIX 53
 #define BLOCK_HEADERS_RANGE 10
 #define DB_INIT_SIZE 0x140000000 /* 5G */
@@ -87,7 +87,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define MAX_PATH 1024
 #define RPC_PATH "/json_rpc"
 #define ADDRESS_MAX 128
-#define BLOCK_TIME 120
+#define BLOCK_TIME 300
 #define HR_BLOCK_COUNT 5
 #define TEMLATE_HEIGHT_VARIANCE 5
 #define MAX_BAD_SHARES 5