diff --git a/src/userprog/syscall.c b/src/userprog/syscall.c
index 175241685cb7ba8e78ea77616de584e7ec48ac44..a876ff5e47dcb04c6b9c50b87d7803f0526396bc 100644
--- a/src/userprog/syscall.c
+++ b/src/userprog/syscall.c
@@ -13,54 +13,27 @@ static void syscall_handler(struct intr_frame *);
 bool create(const char *file, unsigned initial_size);
 tid_t exec(const char *cmd_line);
 
-
 void syscall_init(void) {
   intr_register_int(0x30, 3, INTR_ON, syscall_handler, "syscall");
 }
 
 static void syscall_handler(struct intr_frame *f) {
-
-  // Get the syscall number from the stack
   int syscall_num = *(int *)f->esp;
-
   switch (syscall_num) {
-  
+
   case SYS_REMOVE:
-    // Print current syscall number
-    printf("Syscall_handler() - %d!\n", syscall_num);
     filesys_remove(*(char **)(f->esp + 4));
-    printf(*(char **)(f->esp + 4));
     break;
 
   case SYS_EXEC:
-    // Print current syscall number
-    printf("Syscall_handler() - %d!\n", syscall_num);
-    printf("SYS_CALL : EXEC \n");
-    exec(*(char **)(f->esp + 4));
+    process_execute(*(char **)(f->esp + 4));
     break;
 
   case SYS_CREATE:
-    // Print current syscall number
-    printf("Syscall_handler() - %d!\n", syscall_num);
-    create(*(int *)(f->esp + 4), (unsigned)*(int *)(f->esp + 8));
+    filesys_create(*(char**)(f->esp + 4), (unsigned)*(int *)(f->esp + 8));
     break;
 
   default:
     thread_exit();
   }
 }
-
-
-tid_t exec(const char *cmd_line) {
-  // showing the arg/process in the command line
-  printf(" \ncmd_line : '%s'\n", cmd_line);
-  // executing whatever in cmd_line then return to the process id
-  tid_t pid = process_execute(cmd_line);
-  return pid;
-}
-
-bool create(const char *file, unsigned initial_size) {
-  // This creates a new file but doesn't open it
-  printf("File named '%s' created\n", file);
-  return filesys_create(file, initial_size);
-}
\ No newline at end of file