diff --git a/src/iodined.c b/src/iodined.c
index 10c1a33..c0076fe 100644
--- a/src/iodined.c
+++ b/src/iodined.c
@@ -164,8 +164,7 @@ send_chunk(int dns_fd, int userid) {
 	int datalen;
 	int last;
 
-	/* TODO change this 1200b value to dynamic */
-	datalen = MIN(1200, users[userid].outpacket.len - users[userid].outpacket.offset);
+	datalen = MIN(users[userid].fragsize, users[userid].outpacket.len - users[userid].outpacket.offset);
 
 	if (datalen && users[userid].outpacket.sentlen > 0 && 
 			(
diff --git a/src/user.c b/src/user.c
index 26d49b8..01b4021 100644
--- a/src/user.c
+++ b/src/user.c
@@ -84,6 +84,7 @@ init_users(in_addr_t my_ip, int netbits)
 		users[i].q.id = 0;
 		users[i].out_acked_seqno = 0;
 		users[i].out_acked_fragment = 0;
+		users[i].fragsize = 4096;
 	}
 
 	return created_users;
diff --git a/src/user.h b/src/user.h
index caee959..51fdfbc 100644
--- a/src/user.h
+++ b/src/user.h
@@ -33,6 +33,7 @@ struct user {
 	struct encoder *encoder;
 	int out_acked_seqno;
 	int out_acked_fragment;
+	int fragsize;
 };
 
 extern struct user users[USERS];