diff --git a/main.cpp b/main.cpp
index aeba443..45486cf 100644
--- a/main.cpp
+++ b/main.cpp
@@ -43,7 +43,6 @@ bit32_t n_aligned_pairs=0, n_unique_pairs=0, n_multiple_pairs=0;  //number of pa
 bit32_t n_aligned_a=0, n_unique_a=0, n_multiple_a=0;  //number of a reads aligned
 bit32_t n_aligned_b=0, n_unique_b=0, n_multiple_b=0;  //number of b reads aligned
 bit32_t ref_time, read_time;
-bit16_t tid[64];
 char version[] = "2.90";
 ostringstream message;
 
@@ -56,7 +55,7 @@ void info(int level) {
 pthread_mutex_t mutex_fin=PTHREAD_MUTEX_INITIALIZER;
 pthread_mutex_t mutex_fout=PTHREAD_MUTEX_INITIALIZER;
 
-void *t_SingleAlign(void *tid) {
+void *t_SingleAlign(void *) {
 	SingleAlign a;
 	int n;
 	bit32_t cur_at;
@@ -85,13 +84,13 @@ void *t_SingleAlign(void *tid) {
 void Do_SingleAlign() {
 	vector<pthread_t> pthread_ids(param.num_procs);
 	for(int i=0; i<param.num_procs; i++) {
-		tid[i]=i; pthread_create(&pthread_ids[i], NULL, t_SingleAlign, (void*)&tid[i]);
+		pthread_create(&pthread_ids[i], NULL, t_SingleAlign,NULL);
 	}
 	for(int i=0; i<param.num_procs; i++) pthread_join(pthread_ids[i], NULL);
 };
 
 
-void *t_PairAlign(void *tid) {
+void *t_PairAlign(void *) {
 	PairAlign a;
 	int n1, n2;
 	bit32_t cur_at;
@@ -126,7 +125,7 @@ void Do_PairAlign() {
 	//create
 	//cout <<param.num_procs<<"num_procs\n";
 	for(int i=0; i<param.num_procs; i++) {
-		tid[i]=i; pthread_create(&pthread_ids[i], NULL, t_PairAlign, (void*)&tid[i]);
+		pthread_create(&pthread_ids[i], NULL, t_PairAlign,NULL);
 	}
 	for(int i=0; i<param.num_procs; i++) pthread_join(pthread_ids[i], NULL);
 };