diff --git a/src/threads/thread.c b/src/threads/thread.c
index 5ae0a09..880737a 100644
--- a/src/threads/thread.c
+++ b/src/threads/thread.c
@@ -72,7 +72,7 @@ static void init_thread (struct thread *, const char *name, int nice,
 static bool is_thread (struct thread *) UNUSED;
 static void *alloc_frame (struct thread *, size_t size);
 static int calculate_bsd_priority (fp32_t recent_cpu, int nice);
-static void thread_update_recent_cpu (struct thread *t, void *aux UNUSED);
+static void update_recent_cpu (struct thread *t, void *aux UNUSED);
 static void schedule (void);
 void thread_schedule_tail (struct thread *prev);
 static tid_t allocate_tid (void);
@@ -171,7 +171,7 @@ thread_tick (void)
           fp32_t new_coeff = fp_div_int (fp_from_int (ready), 60);
           load_avg = fp_add (old_coeff, new_coeff);
 
-          thread_foreach (thread_update_recent_cpu, NULL);
+          thread_foreach (update_recent_cpu, NULL);
         }
 
       if (ticks % TIME_SLICE == 0) // recent_cpu was updated, update priority.
@@ -225,8 +225,8 @@ thread_create (const char *name, int priority,
     return TID_ERROR;
 
   /* Initialize thread. */
-  struct thread *pt = thread_current ();
-  init_thread (t, name, pt->nice, priority, pt->recent_cpu);
+  struct thread *parent_thread = thread_current ();
+  init_thread (t, name, parent_thread->nice, priority, parent_thread->recent_cpu);
   tid = t->tid = allocate_tid ();
 
   /* Prepare thread for first run by initializing its stack.
@@ -454,7 +454,7 @@ thread_get_priority (void)
 
 /* Updates recent_cpu for a thread. */
 static void
-thread_update_recent_cpu (struct thread *t, void *aux UNUSED)
+update_recent_cpu (struct thread *t, void *aux UNUSED)
 {
   fp32_t curr_recent_cpu = t->recent_cpu;
   fp32_t dbl_load_avg = fp_mul_int (load_avg, 2);