diff --git a/file.h b/file.h
index 232e14e..ad4cec7 100644
--- a/file.h
+++ b/file.h
@@ -26,7 +26,8 @@ static inline off_t get_file_size(int isdata) {
 }
 
 static int init_file(char* file_path[2]) {
-    for (int i = 0; i < 2; i++) {
+    int i = 0;
+    for(; i < 2; i++) {
         FILE* fp = fopen(file_path[i], "rb+");
         if(!fp) {
             perror("Open file error");
diff --git a/tcpool.h b/tcpool.h
index 72b12ae..f84739d 100644
--- a/tcpool.h
+++ b/tcpool.h
@@ -327,7 +327,8 @@ static void accept_client(int fd) {
     pthread_attr_init(&__tcpool_thread_attr);
     pthread_attr_setdetachstate(&__tcpool_thread_attr, PTHREAD_CREATE_DETACHED);
     TCPOOL_INIT_ACTION;
-    for(int i = 0; i < TCPOOL_THREADCNT; i++) {
+    int i = 0;
+    for(; i < TCPOOL_THREADCNT; i++) {
         pthread_rwlock_init(&tcpool_timers[i].mt, NULL);
         pthread_rwlock_init(&tcpool_timers[i].mb, NULL);
     }
@@ -390,7 +391,7 @@ static void accept_client(int fd) {
         } else {
             pthread_cond_init(&timer->c, NULL);
             pthread_mutex_init(&timer->mc, NULL);
-            if (pthread_create(&timer->thread, &__tcpool_thread_attr, (void (*)(void*))&handle_accept, timer)) {
+            if (pthread_create(&timer->thread, &__tcpool_thread_attr, (void* (*)(void*))&handle_accept, timer)) {
                 perror("Error creating thread");
                 cleanup_thread(timer);
                 putchar('\n');
@@ -405,7 +406,7 @@ static void accept_client(int fd) {
             pthread_cond_init(&timer->tc, NULL);
             pthread_mutex_init(&timer->tmc, NULL);
             timer->hastimerslept = 0;
-            if (pthread_create(&timer->timerthread, &__tcpool_thread_attr, (void (*)(void*))&accept_timer, timer)) {
+            if (pthread_create(&timer->timerthread, &__tcpool_thread_attr, (void* (*)(void*))&accept_timer, timer)) {
                 perror("Error creating timer thread");
                 cleanup_thread(timer);
                 putchar('\n');